• Can it be that some physicists believe in the actual infinite?
    Apparent order is not perceived? Do you know what "apparent" means?Luke

    In that context, "apparent" must mean "seems". If you used "apparent" to mean "perceived by the senses", I would say that you had stated an oxymoron. We apprehend order with the mind, we do not perceive it with the senses.

    If apparent order is not perceived, then your earlier distinction between "internal" and "external" perspective is irrelevant; it's not a matter of perspective at all. So why did you introduce the distinction between "internal" and "external" perspective?Luke

    I don't believe I said anything about an internal perspective. I distinguished between the order which inheres within the thing itself (which we assume must be real to account for the consistency we note from observations), and the order which we assign to things, from our external perspective of them. This is the reason why our knowledge of the order of things is fallible, the order which we say something has is not the same as the order which it actually has. The best we can say is that we have created a representation of the order that things have. We create the representations through the means of analysis of empirical observations, which do not provide us with the inherent order, in conjunction with theorizing, hypotheses. So there is a separation, a medium consisting of observation and theory, which lies between the apparent order (the order which things seem to have), and the true order which inheres within the things themselves.

    The reason why I introduced this distinction is because fishfry claimed that there is a sort of thing, "a set", which has no inherent order at all. I said that such a thing does not exist, because to exist is to have some sort of inherent order. Fishfry scoffed at this. So I proceeded to ask fishfry to explain this type of unity of parts, within which the parts have no order. How could there be such a unity? The point being, that this is simply an imaginary thing stated, 'parts without order', which doesn't correspond to any reality, which is really a logical inconsistency representing falsity, because it is impossible to have parts without order. To be a part of something implies an order in relation to a whole, without that order it cannot be said to be a part. We would have to call it something other than a "part". The point being, that the whole, which the so-called part is said to be a part of, "the set", is not a true whole because it provides no order relations to the so-called parts. Things existing with absolutely no relations of order cannot be said to form a whole, or unity of any kind.
  • Can it be that some physicists believe in the actual infinite?
    Do we perceive both the apparent order and the inherent order? Is there a difference between the apparent order and the inherent order? If so, what is the difference between them?Luke

    The apparent order is made up, a created order, assigned to the group of things, so it is not perceived, it is produced by the mind.

    If there is a difference between the apparent order and the inherent order, then why did you state:Luke

    Why not? The order which we assign to things is clearly not the same as the "exact" order which inheres within things or else we'd have an absolutely perfect understanding of the order of the universe.

    Not a word of this is even on topic relative to whether 2 + 3 and 5 are identical. Since mathematically they are, and as a mathematical expression it must necessarily be interpreted in terms of mathematics, nothing you say can make the slightest difference. Excluded middle? Did Aristotle anticipate intuitionism? That's interesting.fishfry

    As I've explained to you already, the idea that 2+3 is mathematically the same as 5, is simply a misunderstanding of the difference between equality and identity. They are equal, but equal is distinct from identity. I've told you this numerous times before, but you do not listen. Nor do you seem to pay any attention to my references, only repeating your misunderstanding in ignorance.

    However, I'll reproduce for you the opening lines from the Wikipedia entries on both "equality" and "identity" below, just to remind you of how bad your interpretation really is.

    In mathematics, equality is a relationship between two quantities or, more generally two mathematical expressions, asserting that the quantities have the same value, or that the expressions represent the same mathematical object.

    In philosophy, identity, from Latin: identitas ("sameness"), is the relation each thing bears only to itself.
  • Can it be that some physicists believe in the actual infinite?
    Are these both the inherent order (bolded)? If so, then why do you say "along with the order"?Luke

    Yes, you see the object along with the order which inheres within, meaning you see the order, you just do not apprehend it. Consider the dots, we see them, we must see the order because it's there, yet fishfry claimed that the dots were randomly arranged, indicating the order was not apprehended

    So, a professional philosopher. At one point in the article he says: "We are indeed rationally justified in thinking 2 plus 3 will always be 5, because 2 plus 3 is not distinct from but rather identical with 5." My emphasis. So at least one professional philosopher would object to your claim that they are not identical.fishfry

    There are numerous philosophers who argue against the law of identity as stated by Aristotle, Hegel opposed it, as is evident here: https://thephilosophyforum.com/discussion/9078/hegel-versus-aristotle-and-the-law-of-identity/p1

    What I see as an issue which arises from rejecting the idea that each particular object has its own unique identity (law of identity), is a failure of the other two interrelated laws, non-contradiction, and excluded middle. Some philosophers in the Hegelian tradition, like dialectical materialists, and dialetheists, openly reject the the law of non-contradiction. When the law of identity is dismissed, and a thing does not have an identity inherent to itself, the law of non-contradiction loses its applicability because things, or "objects" are imaginary, and physical reality has no bearing on how we conceive of objects.

    There are specific issues with the nature of the physical world that we observe with our senses, which make aspects of it appear to be unintelligible. There must be a reason why aspects of it appear as unintelligible. We can assume that unintelligibility inheres within the object itself, it violates those fundamental laws of intelligibility, or we can assume that our approach to understanding it is making it appear.as unintelligible. I argue that the latter is the only rational choice, and I look for faults in mathematical axioms, and theories of physics, to account for the reason why aspects appear as unintelligible. I believe this is the only rational choice, because if we take the other option, and assume that there is nothing which distinguishes a thing as itself, making it distinct from everything else (aspects of reality violate the law of identity), or that the same thing has contradictory properties at the same time (aspects of reality violate the law of non-contradiction), we actually assume that it is impossible to understand these aspects of reality. So I say it is the irrational choice, because if we start from the assumption that it is impossible to understand certain aspects of reality, we will not attempt to understand them, even though it may be the case that the appearance of unintelligibility is actually caused by the application of faulty principles. Therefore it is our duty subject all fundamental principles to skeptical practices, to first rule out that possibility before we can conclude that unintelligibility inheres within the object.

    Aristotle devised principles whereby the third fundamental law, excluded middle would be suspended under certain circumstances, to account for the appearance of unintelligibility. Ontologically, there is a very big difference between violating the law of excluded middle, and violating the law of non-contradiction. When we allow that excluded middle is violated we admit that the object has not been adequately identified by us. When we allow that non-contradiction is violated we assume that the object has been adequately identified, and it simply is unintelligible.
  • Can it be that some physicists believe in the actual infinite?
    If you were talking about the inherent order the entire time, and if the inherent order is not perceived or apprehended, then why did you say:Luke

    I don't see any problem with those quotes. As I said, the order is right there, in the object, as shown by the object, and seen by you, as you actually see the object, along with the order which inheres within the object, yet it's not apprehended by your mind.

    Sorry L:uke, but I find it extremely ridiculous that you are trying to tell me what I was talking about. As I said, you need to go back and reread the entire section, with the understanding, and commitment, that it's all about the inherent order, therefore the order which inheres within the object. And quit trying to force your nonsense interpretation, insisting that you know better than I do, what I was trying to say, simply so that you can say that I was trying to contradict myself. It's foolish of you.
  • Can it be that some physicists believe in the actual infinite?
    If you see now, that the entire time, I was talking about the order which inheres within the thing itself, as "inherent order", rather than some perceived, apprehended, or creatively imagined order, you can go back and reread the entire section and clear up your misunderstanding. I recommend that anytime you feel the inclination to interpret in the latter sense, and thereby apprehend contradiction, you suppress this inclination, and remain true to the intentions of the author. Afterwards you can ask me for clarification if any points appear to be unclear.
  • Can it be that some physicists believe in the actual infinite?
    But now you say that Kant's phenomena-noumena distinction is not the basis for your argument.Luke

    Right, this principle has a long tradition, it goes back at leas to Aristotle, with the law of identity, so it is definitely not based in Kant. Kant has simply presented the similar principle in his own way. I present it in my way. The principle is not "the same" it is a similar principle, needing to be refined and understood in the unique way of each particular individual mind who desires to understand..

    In Aquinas, we see that independent Forms are fundamentally "intelligible" but not intelligible to the human intellect, because that intellect is united with a material body. This position, of being dependent on a body and the sense organs makes the intellect deficient. We find this same principle in Kant. The human intellect produces knowledge from phenomena which is dependent on sensation, and sense appearances. Notice that Kant refers to the noumenon as "intelligible", though it is not intelligible to us human beings, due to this predicament, which is not a contradiction.

    Yes, but in the posts before you introduced Kant, you were clearly saying that the appearances were the reality (i.e. direct realism), as demonstrated by the quotes.Luke

    No, I don't believe I mentioned "appearances". And "inherent" clearly means within the object, as what inheres within. So if you interpreted me as saying the "inherent order" is part of the appearance of the object within a mind, rather than within the thing itself, I think this was a matter of misinterpretation. You did demonstrate some confusion as to what "inherent" means, as if you were somewhat unfamiliar with the word, so perhaps you thought I was talking about an order abstracted from an appearance, rather than an inherent order at that time.. But if you understood what "inherent" means, and what "appearance" means, you would not have interpreted in this contradictory way.

    I think perhaps the issue was confused because we were talking about a diagram, which is intended to show something. Therefore there is a number of levels of representation which adds ambiguity. The diagram is an actual thing itself, with an inherent order. But it is also made to represent an order (an apparent order), which a human mind apprehends. This produced the problem with fishfry claiming it was "random", lacking order, because that is the intended (apparent order) which it was made to represent, However, I argued that there is necessarily an inherent order within the thing shown, and fishfry's claim that it did not show an order, that it was "random", is a false claim. If you had understood this argument from me, you would have recognized that I was making the same distinction at that time.

    You asked us here (prior to your introduction of Kant) to take a look at the diagram and see the order the dots have, and that they could not have any other order. Yet now (after your introduction of Kant) you are trying to convince us of the opposite: that there must be another order - the inherent order - which is different to the order we can see in the diagram. Moreover, you have claimed that the appearance of order and the inherent order could not be the same just by chance, despite your admission that you don't know whether or not they could be the same.Luke

    That's a misinterpretation. I was asking the same thing both times, to look at the thing, and see that there is an order within the thing itself. What seems to be causing you confusion is the fact that we can look at a thing, and conclude that there is order inherent within (that's what makes a thing intelligible) without actually understanding the order., i.e. we see order without understanding it.

    To return to my recent point, you have conceded that there are "many other types" of order which are not "temporal-spatial", therefore your references to phenomena-noumena (or indirect realism or whatever) do not apply to these many other types of order. Therefore, you cannot claim that there is some hidden order to these other types. While that might be irrelevant to your claims, it is not irrelevant to the criticisms of your claims made by the other posters here. You are the only one arguing that order must involve spatio-temporal phenomena (and/or noumena).Luke

    I don't understand your point. Your reference to "hidden order" doesn't make sense. I'm not talking about a hidden order, and this idea seems to be the source of your misunderstanding. The order is right there in plain view, as things are, but it is just not understood, because we do not have the capacity to understand it.
  • Can it be that some physicists believe in the actual infinite?
    So you don't know whether intention has anything to do with Kant's phenomena-noumena distinction?
    And yet you still use this distinction as the basis of your argument regarding inherent order?
    Luke

    I don't use that distinction as the basis for my argument, I gave that distinction as an example which i thought you might be able to understand.

    You tried to draw an analogy between your supposed inherent order and Kant's noumena. When I pointed out that you had already conceded that "many other types" of order are not spatio-temporal and therefore not noumenal, you said that one other type (best to worst) "is relevant to intention, therefore phenomenal". If you don't know whether intention has anything to do with Kant's phenomena-noumena distinction, as you now admit, then you cannot claim that best-to-worst order is "relevant to intention, therefore phenomenal".Luke

    Come on Luke, use some intelligence. Kant did not have to name every instance of what contributes to phenomena for us to place things in that category. If you think I am wrong, and intention ought not be placed in that category, then just tell me. But please give reasons. Simply saying Kant didn't explicitly say it therefore, you're wrong in your analogy, is pointless.

    What strawman interpretation? Instead of empty accusations, go ahead and explain how or what I have misinterpreted.Luke

    I told you how you misinterpreted., You claimed a contradiction when I said I couldn't describe something which was shown. That is just an indication of the limits to human intelligence, and word use, not a contradiction.

    Pure contradiction.Luke

    Thanks for all the quotes removed from context. To be shown, or demonstrated does not mean to be stated, I went through that in the last post, and again above. And, "the positioning of those points relative to each other is describable" does not mean that I have the capacity to describe them. I do believe I mentioned that it would require an intelligence superior to a human intelligence, like a divine intellect. I was arguing the deficiencies of the human intellect, in being incapable of describing what is inherently describable.

    This is exactly the problem which quantum physics actually has. The physicists are incapable of adequately describing the positioning, therefore "order" of the particles. We can either conclude that the particles have no inherent order, because the order cannot be determined by the human techniques, or we can conclude that they have an order, but other principles, and a higher intelligence, are required to figure out the order. As I explained to you already, (which you've left out of your inflammatory interpretation), is that the latter choice is the rational choice.

    Therefore I reaffirm my accusation, that you are intentionally misinterpreting what I write for the sake of making it appear as contradictory, instead of putting any effort into trying to understand it. This is very consistent with my observations of your mode of operation at this forum.
  • Hole in the Bottom of Maths (Video)
    In that last sentence, I merely say that it seems to me that when we make correct computations in arithmetic, we can take the results as true.TonesInDeepFreeze

    Strictly speaking, when we make correct computations in arithmetic, the results are logically valid. Following correct procedure results in a valid conclusion. Do you recognize the commonly held distinction between true and valid? A valid conclusion is not necessarily true, because it requires also that the premises are true. If we hold that axioms (as premises) are neither true nor false, or that truth and falsity is not relevant to axioms, then we cannot claim that correct computations provide us with truth.
  • Can it be that some physicists believe in the actual infinite?
    Where does Kant say this?Luke

    I don't know if Kant ever said, but it's pretty obvious how intention must fit in.

    Also, do you have any intention of accounting for your latest blatant contradiction:Luke

    No, sorry I must have made a mistake, or perhaps you just misunderstood. More likely, you intentionally misinterpreted, as usual. I'm very well acquainted with your strawman interpretations designed at creating the appearance of contradiction.

    Before your claim was that the inherent order is what's shown. Now you claim that the inherent order is what's hidden. It can't be both.Luke

    There is no contradiction in saying that I am showing you an order which I cannot describe. Try again. But I suggest you try to understand rather than trying to misunderstand.
  • Can it be that some physicists believe in the actual infinite?
    How is intention phenomenal (in the relevant Kantian sense)?Luke

    Intention is an integral part of the phenomenal system, the world as it appears to us, as the fulfillment of our wants and needs have shaped the way that we perceive the world evolutionarily, and have much influence over our perceptions on a day to day basis..
  • Can it be that some physicists believe in the actual infinite?
    You are trying to draw an analogy between order/inherent order and phenomena/noumena. However, phenomena and noumena are both temporal-spatial, which makes order and inherent order also temporal-spatial by analogy.Luke

    Right, inherent order, which I classed as noumenal, appears to be spatial-temporal. But the type of ordering which fishfry demonstrated to me, ordering by best, or better, cannot be inherent order because it is relative to intention, therefore phenomenal.

    I don't see the problem.

    So there you are, still demanding that order must be temporal-spatial.TonesInDeepFreeze

    Yes, I agree that "order", when reduced in the extreme, seems to require necessarily, spatial-temporal conceptions. .I agree that some types of ordering such as those presented, which I called order by best, or better, appear to be free from spatial-temporal conceptions. But ultimately there must be something which is being ordered, individual objects, and this requires spatial separations. Perhaps however, we can order intentions themselves, as better or worse, as objects in the sense of goals, and we might give ends an ordering which is completely void of spatial-temporal conceptions. But this requires that we determine what type of existence an intention has.

    And after so many days on end of you claiming that orderings are necessarily temporal-spatial, now you recognize that orderings do not have to be temporal-spatial, so what took you so long? It's piercingly clear that there are orderings that are not not temporal-spatial, but you could not see that because you are stubborn and obtuse.TonesInDeepFreeze

    Earlier in the thread, it was flatly denied as nonsensical, that the type of objects which existed in sets, are intentions. As explained above, that is the only way I can apprehend an "object" which has no inherent order, if it were an intention. So, if the things in sets are said to have no inherent order, the issue remains. How do you conceive of individual things with no spatial-temporal ordering, such that they can exist in a set without inherent ordering if these things are not intentions?

    I have rebutted great amounts of your confusions. You either skip the most crucial parts of those rebuttals or get them all mixed up in your mind.

    Anyway, to say that there is "THE inherent ordering" of a set, but not be able to identify it for a set as simple as two members is, at the least, problematic. But more importantly, you cannot even define the "THE inherent ordering" as a general notion. That is, you cannot provide a definition like:
    TonesInDeepFreeze

    I have defined "inherent order", in relation to the law of identity. It is you who is skipping the most crucial parts of what I write.

    In set theory and abstract mathematics. EVERY property of an object is inherent to the object. (Mathematical) objects don't change properties. They have the exact properties they have - always - and no other properties - always.TonesInDeepFreeze

    OK then, two distinct ordering of the same elements constitutes two distinct sets. Do you agree? If order is inherent to the object, as you claim, then two distinct orderings of the same elements constitutes two distinct objects, therefore two distinct sets. Do you see this?

    But the point you keep missing is that you have not defined what it means to say that one of the orderings in particular is "THE inherent ordering". They are all orderings of the set, and they are all inherent to the set. I have put 'THE' in all caps about a hundred times now. The reason I do that is obvious, but you still don't get it.TonesInDeepFreeze

    It's you who keeps missing the point. The "inherent order" is as "inherent" implies, the one which inheres within the object, as its identity, stipulated by the law of identity. It is categorically different from any order which we might assign to the object. Therefore it is not "one of the orderings" which we lay out, it is distinct from these. And the question you keep asking me, which of these orders is the inherent order is nonsensical because i keep telling you it's none of those orders.

    This started with discussion of the axiom of extensionality. With that axiom, sets are equal if they have the same members.TonesInDeepFreeze

    Do you agree with me, that "equal" does not mean "the same"? Therefore equal sets are not the same set. Two sets with the same members in different orders can be said to be equal, but they cannot be said to be the same set. This is the part that fishfry doesn't get. Fishfry believes that if the sets are equal, they are necessarily the same set.

    And it seems the reason you don't get that is because you started out needing to deny the sense of the axiom of extensionality itself, even though you are ignorant of what it does in set theory and you are ignorant of virtually the entire context of logic, set theory and mathematics.TonesInDeepFreeze

    I am not denying the axiom of extensionality, I am denying a particular interpretation of it, which says that equal sets are the same set. I look at this as a misunderstanding.
  • Hole in the Bottom of Maths (Video)
    I made no argument for a philosophy regarding truth.TonesInDeepFreeze

    Then what would you call the following?

    We are concerned not just with the object-language and a meta-language, but the object-theory and a meta-theory.

    With a meta-theory, there a models of the object-theory. Per those models, sentences of the object-language have truth values. So the Godel-sentence is not provable in the object-language but it in a meta-theory, we prove that the Godel-sentence is true in the standard model for the language of arithmetic. Also, as you touched on, in the meta-theory, we prove the embedding of the Godel-sentence into the language of the meta-theory (which is tantamount to proving that the sentence is true in the standard model). That is a formal account of the matter. And in a more modern context than Godel's own context, if we want to be formal, then that is the account we most likely would adopt.

    Godel himself did not refer to models. Godel's account is that the Godel-sentence is true per arithmetic, without having to specify a formal notion of 'truth'. And we should find this instructive. It seems to me that for sentences of arithmetic, especially ones for which a computation exists to determine whether it holds or not, we are on quite firm ground "epistemologically" to say, without quibbling about formality, that the sentence is true when we can compute that it does hold.
    TonesInDeepFreeze
  • Can it be that some physicists believe in the actual infinite?
    If order is not restricted to "temporal/spatial", then order is not restricted to unknowable noumena.Luke

    Of course, that's why we have to acknowledge the difference between the order we say that a group of things has, and the inherent order of that group of things. They are both called "order". That they are different accounts for the fact that we make mistakes in understanding the order of things..
  • Can it be that some physicists believe in the actual infinite?
    It was pointed out to you that there are orderings that are not temporal-spatial. But you insisted, over and over, that temporal-spatial position is required for ordering.TonesInDeepFreeze

    I changed my mind on that days ago, when fishfry offered an ordering based on best. Then we moved along to "inherent order".

    Not only cannot you tell us what "THE inherent order" is for ANY set, but you can't even define the rubric.

    You can't even say what is "THE inherent order" of {your-mouse your-keyboard} even though they are right in front of you. And you said a really crazy thing: If you identified "THE inherent order" of a set then we will identified it incorrectly. You have a 50% chance of correctly identifying "THE inherent order" of {your-mouse your-keyboard} but you say that you would be wrong no matter which order you identified as "THE inherent order"!
    TonesInDeepFreeze

    Right, I cannot say what the inherent order is, for the reasons explained. Do you have a problem with those reasons? Or do you just not understand what I've already repeated? You understand what "inherent" means don't you?

    (1) For every set, there is a determined set of strict linear orderings of the set. (That is a simple and intelligible alternative to his confused notion of "THE inherent order" ensuing from identity.)TonesInDeepFreeze

    The question is whether or not it is possible for a set to be free from inherent order, i.e. having no inherent order, as fishfry claimed. You still don't seem to be grasping the issue.
  • Can it be that some physicists believe in the actual infinite?
    Before, it was temporal/spatial.TonesInDeepFreeze

    Temporal/spatial was just one type of order, fishfry and Lluke gave examples of many other types. So we're not restricted to temporal/spatial order in our attempts at understanding the nature of inherent order.

    Now, please tell me "THE inherent order" of them.TonesInDeepFreeze

    I explained very clearly in the last post why i cannot tell you the inherent order. It's not something that can be spoken,. Just like the identity of a thing, as stated by the law of identity, is not something that can be spoken. It is what is proper to the thing itself, not what is said about the thing. The order which inheres within the thing is proper to the thing itself, and not what is said about the thing. Do you understand this principle of identity?

    So any predicate that involves "relations with others" is an order?TonesInDeepFreeze

    Of course, any relation with another is an order.

    Now you're resorting to a mystical "true order that inheres in an object" but such that if we even attempted to state what that order would be, then we would be wrong!TonesInDeepFreeze

    If you wish to view the law of identity as a "mystical" principle, I have no problem with that. I would consider that most good ontology is based in mysticism.

    If the true order cannot be assigned from an external perspective, then what is the "internal perspective" of an arrangement of objects? Will I know the "true order" of its vertices if I stand in the middle of a triangle?Luke

    Are you aware of Kant;s distinction between phenomena and noumena? As human beings, we do not know the thing itself, we only know how it appears to us. Kant seems to describe the noumena as fundamentally unknowable. Others argue that it is fundamentally knowable, but only to a divine intellect, and not a lower intellect like the human being.

    In other words, how could the inherent order be known? If it cannot be known then how do you know there is one?Luke

    We assume that there is a way that the world is (inherent order), because this is what makes sense intuitively. If we assume that there is no such thing, then we assume that the world is fundamentally unintelligible. To the philosophically inclined mind, which has the desire to know, the assumption that the world is fundamentally unintelligible is self-defeating. Therefore the rational choice is to assume that there is a way that the world is (inherent order). So we don't know that there is an inherent order, we assume that there is, because that is the rational choice.
  • Hole in the Bottom of Maths (Video)
    I haven't argued a philosophy.TonesInDeepFreeze

    Take a look at my quote above, and the context from where it's taken. You are arguing a philosophy of truth.

    empirical validation isn't relevant.Wayfarer

    That's exactly what makes arguing for mathematics as the purveyor of truth, dogmatism.
  • Can it be that some physicists believe in the actual infinite?
    It is the unique object whose members are all and only those specified by the set's definition.TonesInDeepFreeze

    As I explained, the objects, as existing objects, have an inherent order, so it is wrong to deny that the objects have an inherent order.

    What is that "inherent order"? On what basis would you say one of these is the "inherent" order but not the others?:TonesInDeepFreeze

    The inherent order is the true order, which inheres in the arrangement of objects. If I stated an order, this would be an order which I assign to those objects, from an external perspective, and therefore not the inherent order.

    There are no spatial-temporal parameters for you to reference, just 3 people, with 3!=6 strict linear orderings. Order them temporally by birth date? Temporally by the day you first met them? Spatially east to west? Spatially west to east? Which is "THE inherent order" such that the other orders are not "THE inherent order"?TonesInDeepFreeze

    I assume that there are three individual human beings indicated by those names. The inherent order, if we were to attempt to describe it, would contain all the truthful relations between those beings. Order is the condition under which every part is in its right place. Therefore everything said about the relations between these people would be true if we were describing the inherent order.

    'is prime' is a predicate, not an ordering.TonesInDeepFreeze

    It is a predicate which refers to relations with others, therefore an order.

    Ordering was not "removed". There are n! orderings of the set. Remarking that you have not defined "THE inherent ordering" is not "removing" anything.TonesInDeepFreeze

    Yes, according to fishfry ordering was removed, abstracted away, to leave the members of the set without any inherent order. If you are having difficulty with "inherent order", it is fishfry's term as well, but I suggest that it means order which inheres within the mentioned object (set). A set has been described by fishfry as a type of unity, but it was also said that this unity has no inherent order to its parts.

    In the case of a collection of things in the physical world, they have spatio-temporal positoin, but there is no inherent order. How would you define it?fishfry

    In a collection of things in the physical world, everything has the place that it has. This is the order of that collection. The fact that we cannot adequately define that order only indicates that we do not adequately understand the positioning of things in the world.

    The point is even stronger when considering abstract objects such as the vertices of a triangle, which can not have any inherent order before you arbitrarily impose one. If the triangle is in the plane you might again say leftmost or topmost or whatever, but that depends on the coordinate system; and someone else could just as easily choose a different coordinate system.fishfry

    You're missing the point. If the triangle has any existence, then each of its vertices has a position relative to the others, and therefore an order. You can say "equilateral triangle" and insist that this refers to an abstract object with no inherent order to its vertices, but you'd be speaking falsely. There is clearly an inherent order to the vertices signified by "equilateral triangle", or else you could have something other than an equilateral triangle.

    You agree finally that a mathematical set has no inherent order, and you ask whether that's the right conceptual model of a set. THIS at last is a conversation we can have going forward.fishfry

    I never denied that this was how you conceived "set". I just argued that it is incoherent. Which I still do. If that's progress, then great.

    You agree that mathematical sets as currently understood have no order, and you question whether Cantor and Zermelo may have gotten it wrong back in the day and led everyone else astray for a century. This is a conversation we can have.fishfry

    No, rather than say "currently understood", I would class it as a misunderstanding. The reason, as I explained, I think it is impossible to have a set without order, regardless of what mathematicians believe. You continue to assert that this is possible, but have not addressed my arguments against it, nor have you demonstrated how a group of things could exist as a unity (a set), without any order to that group. so I still believe that your assertions, and those of other mathematicians, if they assert similar things, are reflections of a deep misunderstanding.

    Clearly there is more than one point in math.fishfry

    That is untrue, just like your claim of multiple identical spheres is untrue. If the point is truly non-dimensional then there is nothing to distinguish one point from another, point therefore only one point in math. We make representations of points, in speaking and drawing diagrams, but these are representations, they are not a true point which must be purely abstract. Once you abstract a pure point, how would you make another?

    Tell me what the order is so that I may know.fishfry

    As I said above in my reply to Tones, if I stated an order, it would be a representation, imposed from my perspective, and therefore not the order which inheres within the object, the inherent order. This is the issue similar to the issue with the law of identity. The identity of a thing is within the thing itself, that's what the law of identity states, a thing is the same as itself, its identity is itself. If you asked, me, tell me, what is the thing's identity, well very clearly I cannot tell you, because I'd be assigning an identity and this is not the true identity which inheres within the thing. Likewise, I cannot tell you the order which inheres within the group of things, because iIwould just be giving you an order which I impose on that group from an external perspective.

    Which are the first, second, and third vertices of an equilateral triangle?fishfry

    Each vertex is distinct from the others, and necessarily unique, separated from the others and having a specific relation with the others, or else it would not be the mentioned object. It is not a matter of "first, second, and third", that is simply how you might order them. However, there must be three distinct vertices each with its own unique identity, and a spatial order between these three, indicated by "equilateral triangle".

    Of course the elements can be distinguished from each other, just as the elements of the set {sun, moon, tuna sandwich} can. There's no inherent order on the elements of that set.fishfry

    That is not a set, it's a category mistake. Sun and moon refer to particular objects existing with an inherent order, but "tuna sandwich" refers not to a particular, it signifies a universal, an abstraction.

    How about {ass, elbow}. Can you distinguish your ass from your elbow? That's how. And what is the 'inherent order" of the two? A proctologist would put the asshole first, an orthopedist would put the elbow first.fishfry

    You do not think that there is an inherent order between your ass and your elbow? You're just being ridiculous now. Do you even know what "order" means? Look it up in the dictionary please. Maybe then we might proceed. However, it appears like we are far apart as to what that word actually means. I'm starting to see now the misunderstanding in mathematics. You give "order" some special meaning, as a magical thing which you can take away from unities, and give to unities without affecting the unity of that unity.

    If I use the word congruent, the example stands. And what it's an example of, is a universe with two congruent -- that is, identical except for location -- objects, which can not be distinguished by any quality that you can name. You can't even distinguish their location, as in "this one's to the left of that one," because they are the only two objects in the universe. This is proposed as a counterexample to identity of indiscernibles. I take no position on the subject. but I propose this thought experiment as a set consisting of two objects that can not possibly have any inherent order.fishfry

    There's contradiction in your description. You say that they have distinguishable locations, yet you can't distinguish their locations. In any case to have an object here, and an object over there, at the same time, is sufficient to say that they are distinct objects and therefore not identical.

    You know, you can simply reject the identity of indiscernibles if you don't like it. You can just say that you do not believe it, and you think that two distinct objects might be exactly the same. It's an ontological principle based in inductive reasoning, so it's not necessarily true. It's just that it's a strong inductive principle.
  • Hole in the Bottom of Maths (Video)
    Let me explain it clearly then, since you seem to be having trouble understanding. When someone accepts, believes in, and adheres to principles which have not been empirically proven and argues a philosophy which gives the highest esteem to such principles, that is dogmatism. Many principles employed in modern mathematics, axioms, have not been empirically proven. So to believe strongly in, and argue from such principles, even labeling those who doubt these unproven principles as cranks, is dogmatism.
  • Can it be that some physicists believe in the actual infinite?
    As sets, they have no order. If you ADD IN their spatio-temporal position, that gives them order. The positioning is something added in on top of their basic setness. For some reason this is lost on you.fishfry

    What is the set then? You already said it's not the names. If it's the individual people named, then they necessarily have spatial temporal positioning. You cannot remove the necessity of spatial-temporal positioning for those individuals, and still claim that the name refers to the individuals. That would be a falsity. So I ask you again, what constitutes "the set"? It's not the symbols, and it's not the individuals named by the symbol (which necessarily have order). What is it?

    Yes. That is true. But the SETNESS of these elements has no order. Not for any deep metaphysical reason, but rather because that is simply how mathematical sets are conceived. It is no different, in principle, than the way the knight moves in chess. Do you similarly argue with that? Why not?fishfry

    Well, it might be the case, that this "is simply how mathematical sets are conceived", but the question is whether this is a misconception.

    Now consider. You claim that their position in space defines an inherent order. But what if I rotate the triangle so that the formerly leftmost vertex is now on the bottom, and the uppermost vertex is now on the left? The set of vertices hasn't changed but YOUR order has. So therefore order was not an inherent part of the set, but rather depends on the spatial orientation of the triangle.fishfry

    This is not true, the order has not changed . The vertices still have the same spatial-temporal relations with each other, and this is what constitutes their order. By rotating the triangle you simply change the relations of the points in relation to something else, something external. So it is nothing but a change in perspective, similar to looking at the triangle from the opposite side of the plane. It appears like there is a different ordering, but this is only a perspective dependent ordering, not the ordering that the object truly has.

    I just gave you a nice example, but I'm sure you'll argue.fishfry

    Clearly your example fails to give what you desire. We are talking about "inherent order". This is the order which inheres within the group of things. It is not the perspective dependent order, which we assign to the things in an arbitrary manner, which is an extrinsically imposed order, it is the order which the things have independently of such an imposed order.

    The issue is whether or not there can be a group of things without any such inherent order. It is only by denying all inherent order that one can claim that an arbitrarily assigned order has any truth, thereby claiming to be able to attribute any possible order to the individuals.

    In your example of "equilateral triangle" you have granted the points an inherent order with that designation. You can only remove the order with the assumption that each point is "the same". However, it is necessary that each point is different, because if they were the same you would just have a single point, not a triangle. Therefore, it is necessary to assume that each point is different, with its own unique identity, and cannot be exchanged one for the other as equal things are said to be exchangeable. So when the triangle is rotated, each point maintains its unique identity, and its order in relation to the other points, and there is no change of order. A change of order would destroy the defined triangle.

    Vertices of a triangle. Inherently without order.fishfry

    You think it's a good example, I see it as a contradiction. "Vertices of a triangle" specifies an inherent order.

    Well no, not really. I do abstract out order, for the purpose of formalizing our notions of order. I'm not making metaphysical claims. I'm showing you how mathematicians conceive of abstract order, which they do so that they can study order, in the abstract. But you utterly reject abstract thinking, for purposes of trolling or contrariness or for some other motive that I cannot discern.fishfry

    The point though, is that to remove all order from a group of things is physically impossible. And, "order" is a physically based concept. So the effort to remove all order from a group of things in an attempt to "conceive of abstract order" will produce nothing but misconception. If this is the mathematician's mode of studying order, then the mathematician is lost in misunderstanding.

    It clarifies our thinking, by showing us how to separate the collection-ness of some objects from any of the many different ways to order it.fishfry

    There is a fundamental principle which must be respected when considering "the many different ways to order" a group of things. That is the fact that such possibility is restricted by the present order. This is a physical principle. Existing physical conditions restrict the possibility for ordering. Therefore whenever we consider "the many different ways to order" a group of things, we must necessarily consider their present order, if we want a true outlook. To claim "no order" and deny the fact that there is a present order, is a simple falsity.

    Vertices of an equilateral triangle. Let's drill down on that. It's a good example.

    But take the sun, the earth, and the moon. Today we might say they have an inherent order because the sun is the center of the solar system, the earth is a planet, and the moon is a satellite of the earth.

    But the ancients thought it was more like the earth, sun, and moon. The earth is the center, the sun is really bright, and the moon only comes out at night.

    Is "inherent order" historically contingent? What exactly do YOU think is the "inherent order" of the sun, the earth, and the moon? You can't make a case.
    fishfry

    The "inherent order" is the order that the things have independently of the order that we assign to them. This is the reason why the law of identity is an important law to uphold, and why it was introduced in the first place. It assigns identity to the thing itself, rather than what we say about it. We can apply this to the "order" of related things like the ones you mentioned. The sun, earth, and moon, as three unique points, have an order inherent to them, which is distinct from any order which we might assign to them. The order we assign to them is perspective dependent. The order which inheres within them is the assumed true order. In our actions of assigning to them a perspective dependent order, we must pay attention to the fact that they do have an independent, inherent order, and the goal of representing that order truthfully will restrict the possibility for orders which we can assign to them.

    Now, you want to assume "a set" of points or some such thing without any inherent order at all. Of course we can all see that such points cannot have any real spatial temporal existence, they are simply abstract tools. To deny them of all inherent order is to deny them of all spatial-temporal existence. The point which you do not seem to grasp, is that once you have abstracted all order away from these points, to grant to them "no inherent order" by denying them all spatial-temporal relations, you cannot now turn around and talk about their possible orders. Order is a spatial-temporal concept, and you have removed this from those points, in your abstraction. That abstraction has removed any possibility of order, so to speak of possible orders now is contradiction.

    A mathematical set is such a thing. And even if you claim that your own private concept of a set has inherent order, you still have to admit that the mathematical concept of a set doesn't.fishfry

    Assuming you have understood the paragraphs I wrote above, let's say that "a mathematical set is such a thing". It consists of points, or some similar type of thing which have had all principles for ordering removed from them, therefore these points (or whatever) have no inherent order. By what means do you say that there is a possibility for ordering them? They have no spatial-temporal separation, therefore no means for distinguishing one from the other, they are simply assumed to exist as a set. How do you think it is possible to order them when they have been conceived by denying all principles of order.? To introduce a principle of order would contradict the essential nature of these things.

    You're wrong.fishfry

    I'm waiting for a demonstration to support this repeated assertion. How would you distinguish one from another if you remove all principles which produce inherent order?

    You have corrected me and I stand corrected.fishfry

    Accepted, and I think that course of two identical spheres is a dead end route not to be pursued.

    The set of all primes between one and twenty-one has no order dependent upon its definition.jgill

    You have stipulated an order, "primes" indicates a relation to each other.
  • Hole in the Bottom of Maths (Video)
    Meanwhile, I allow that anyone is welcome to stipulate their own terminology and even to propose an entirely different framework for consideration of mathematics.TonesInDeepFreeze

    When you reject such, and insist on the other, it's dogmaticism.
  • Hole in the Bottom of Maths (Video)
    What dogmatism do you think you have witnessed?TonesInDeepFreeze

    Aside from whatever SophistiCat might say, it is not the case that formalism regards the incompleteness theorem in that way.

    (1) Sentences are not true in a language. They are true or false in a model for a language.

    (2) Sentences are not proven just in a language, but rather in a system of axioms and rules of inference.

    (3) There are different versions of formalism, and it is not the case that in general formalism regards truth to be just provability.

    (4) Godel's theorem in its bare form is about provability and does not need to mention the relationship between truth and proof (though a corollary does pertain to truth). The theorem is about provability, which is syntactical. Even if we had no particular notion of truth in mind, Godels' theorem goes right ahead to show that for systems of a certain kind, there are sentences in the language for the system such that neither the sentence not its negation are provable in the system.
    TonesInDeepFreeze
  • Hole in the Bottom of Maths (Video)
    Thanks. I have learned from this thread to avoid discussion of this topic in future.Wayfarer

    Wise decision, the dogmatic don't provide reasonable discourse.
  • Hole in the Bottom of Maths (Video)
    Sextus Empiricus against the dogmatist's criteria of truth:

    At the end of Sextus’ discussion in PH II, he clearly signals, as one would expect, that he suspends judgment on whether there are criteria of truth:

    You must realize that it is not our intention to assert that standards of truth are unreal (that would be dogmatic); rather, since the Dogmatists seem plausibly to have established that there is a standard of truth, we have set up plausible-seeming arguments in opposition to them, affirming neither that they are true nor that they are more plausible than those on the contrary side, but concluding to suspension of judgement because of the apparently equal plausibility of these arguments and those produced by the Dogmatists. (PH II 79; cf. M VII 444)
    — Stanford Encyclopedia of Philosophy

    According to Chisholm, there are only three responses to the Problem of the Criterion: particularism, methodism, and skepticism. The particularist assumes an answer to (1) and then uses that to answer (2), whereas the methodist assumes an answer to (2) and then uses that to answer (1). The skeptic claims that you cannot answer (1) without first having an answer to (2) and you cannot answer (2) without first having an answer to (1), and so you cannot answer either. Chisholm claims that, unfortunately, regardless of which of these responses to the Problem of the Criterion we adopt we are forced to beg the question. It will be worth examining each of the responses to the Problem of the Criterion that Chisholm considers and how each begs the question against the others. — Internet Encyclopedia of Philosophy
  • Can it be that some physicists believe in the actual infinite?
    You claim that the elements of the diagram have a "spatial order". Effectively, this is to say that the elements "have the order they have" without specifying what that order is.Luke

    I specified the order. It is a spatial order, the one demonstrated by the diagram. Why is this difficult for you to understand? When a diagram shows us an arrangement of dots, it shows us the spatial order of those dots, where the dots must be on a spatial plane to fulfill the order being demonstrated. What is the diagram? An arrangement of dots. What does it demonstrate to us? An ordering of those dots. Someone could proceed with that diagram to lay out the same pattern with other objects, with the ground, or some other surface as the plane. Just because fishfry called it a "random" arrangement doesn't mean that it does not demonstrate an order. Fishfry used "random" deceptively, as I explained already.

    You have provided no explanation as to why the diagram has the spatial order it has instead of any other possible spatial ordering of the the same elements.Luke

    Yes I did explain that. There was a process which put those dots where they are, a cause, therefore a reason for them being as they are and not in any other possible ordering. That is why it is not true to call it a random arrangement, unless you are using "random" to signify something other than no order.

    This is an important constituent of the distinction between actual order, and possible order. A distinction which fishfry rejected as not with principle. But there is such a principle, which fishfry simply denied, that things must have an actual order, to have existence. I believe it's called the principle of sufficient reason. And this principle renders "the set", as being a unity composed of parts, without any inherent order, as an incoherent notion. We could say that there are many possible orders which the parts could have, but if they do not have an actual order, the supposition of "unity" and therefore "set" is unjustified.
  • Can it be that some physicists believe in the actual infinite?
    How does this account for the order of rank of military officers, or of suits in a game of bridge? Or the order of values of playing cards in Blackjack? Or the order of the letters of the alphabet? Or monetary value?Luke

    Examples like that is how fishfry convinced me otherwise.

    You claimed that the diagram has an inherent order. Specify that order.Luke

    I believe I already did. It's a spatial order, each dot has its own specific position on the plane. To change the position of one would change the order, requiring a different diagram. So that order is inherent to that diagram.

    Specify that order. Which dots are the start and end points of that order?Luke

    There is no need to specify a start and end. After giving me examples of order which is not a temporal order, you cannot now turn around and insist that "order" implies a known start and end. "Order" is defined as "the condition in which every part, unit, etc., is in its right place". That's why the diagram has an inherent order. If any of the dots were in a different place it would not be the diagram which it is, because some part would be in the wrong place for it to be that particular diagram.

    But the deeper point is that YOUR CONCEPT of a set has inherent order, and that's fine. But the mathematical concept of a set has no inherent order. So you have your own private math. I certainly can't argue with you about it.fishfry

    Right, and do you also see now, that the mathematical concept of a set is incoherent? I hope so, after all the time I've spent explaining that to you.

    The sets {a,b,c}, {c,b,a}, and {a,c,b} are exactly the same set. Just as Sonny and Cher are the same singing group as Cher and Sonny. They're the same two people. You and I are the same two people whether we're described as Meta and fishfry or fishfry and Meta. If you can't see that, what the heck could I ever say and why would I bother?fishfry

    Now, do you see that Sonny and Cher, Meta and fishfry, as individual people, have spatial temporal positioning, therefore an inherent order? I am here, you are there, etc.. We can change the order, and switch places, or move to other places, but at no time is there not an order.

    So, you propose a set [a,b.c], [c,b,a], or phrase it however you like. You have these three elements. Do you agree that the three things referred to by "a", "b", and "c", must have an order, just like three people must have an order, or else the set is really not a set of anything? There is nothing which could fulfill the condition of having no order.

    I know, you'll probably say it's abstract objects, mathematical objects, referred to by the letters as members of the set, therefore there is no spatial-temporal order. But even this type of "thing" must have an order as defined by, or as being part of a logical system, or else they can't even qualify as conceptions or abstract objects. Without any order, they cannot be logical, and are simply nothings, not even abstract objects. It appears like you want to abstract the order out of the thing, but that's completely incoherent. Order is what is intelligible to us, so to remove the order is to render the concept unintelligible. What's the point to an unintelligible concept of "set"?

    Whatever man. You're talking nonsense. The Sun, the Moon, and the stars are the same collection of astronomical objects as the Moon, the stars, and the Sun.fishfry

    Yes. Now do you see that these three things have order, regardless of the order in which you name them? And all things have some sort of order regardless of whether you recognize the order, or not. If there was something without any order it would not be sensible, cognizable or recognizable at all. In fact it makes no sense whatsoever to assume something without any order, or even to claim that such a thing is a real possibility. So to propose that there could be a complete lack of order, and start with this as a premise, whereby you might claim infinite possibility for order, you'd be making a false proposition. It's false because a complete lack of order would be absolute nothing, therefore nothing to be ordered, and absolutely zero possibility for order. But you want to say that there is "something" which has no order, and this something provides the possibility of order. By insisting that there is no order to this "something" you presume it to be unintelligible.

    But why can't I have two conceptual, abstract spheres?fishfry

    If you think about what it means to be a conceptual abstract sphere, the answer ought to become apparent to you. What makes one sphere different from another is their physical presence. If you have two distinct concepts of a sphere, then they are only both the exact same concept of sphere through the fallacy of equivocation. If you have one concept of an abstract sphere then it is false to say that this is two concepts. It is simply impossible to have two distinct abstract concepts which are exactly the same, because you could not tell them apart. It's just one concept.

    It is not I who is making the dumb propositions.
  • Can it be that some physicists believe in the actual infinite?
    erhaps “numerical” wasn’t the right word. The context of the post and the preceding discussion indicates that a “before and after” ordinality was implied, of the sort Tones recently mentioned:Luke

    Before and after, are temporal terms. Fishfry had rejected the notion that "order" is based in spatial-temporal relations, and wanted an order based in quantity. But a quantity based order is what produces the problem I first referred to. If "2" refers to a quantity of objects in the context of "order", then it does not refer to a single object, the number 2. In any case, what distinguishes one thing from another, allowing for individuals, and quantity itself is spatial relations. So we're back to spatial relations as the bases of order. It's very clear that the subject was order of any sort, when "no inherent order" was mentioned.

    It was my suggestion that "order" is fundamentally temporal, but fishfry produced examples of an order based on a judgement of better and worse, to discount that theory. So we really haven't agreed on any specific type of order yet. This is probably because we haven't agreed on what type of existence the things which are supposed to have no inherent order, but are capable of being ordered, have.

    Yes, it certainly looks like that faulty brick in the foundations of math will surely cause the giant structure to collapse. I wish I had known this before becoming a mathematician. :cry:jgill

    I don't foresee any imminent collapse, but the structure ought to be dismantled because it supports the faulty worldview which is prevalent today, which is a sort of scientism. Fishfry perceives that physics has reached a sort of dead end in its endeavours, but refuses to acknowledge that the dead end is brought about by the principles employed (mathematics included) rather than the unintelligibility of the world itself.

    The use of "infinity" which is the topic of this thread (believe it or not) is a very good example. I apprehend, that at the base of the idea of infinity in natural numbers, is the desire, or intention to allow that numbers can be used to count anything. There will never be something which cannot be counted because the numbering system has been designed to allow that the numbers can always go higher. This gives the appearance that everything is measurable.

    The only drawback is that this renders infinity itself, (the principle which provides this capacity, that everything is measurable) as immeasurable. So in reality everything is measurable except the principles we use to measure with. What this means is that to understand the nature of measurement and infinity, we must place these into a different category from the category of things which are measurable, and understand it on those terms, as immeasurable. If we attempt to bring infinity into the category of things which are measurable, as is the trend in modern mathematics, because we want mathematics to enable science to be applicable everything, even the thing which by its own design is immeasurable, then we introduce contradiction (the immeasurable is measurable) and therefore unintelligibility into our principles. That is where we are today, we have allowed unintelligibility to inhere within our principles of measurement. As fishfry said "math has experienced a loss of certainty".

    Fishfry and I really agree that the big picture is very hazy (uncertain). But when it comes down to determining the specific points where the haziness arises from, fishfry refuses to follow. It's like seeing smoke on the horizon and wondering why it's there. But when I point to the fire, fishfry refuses to acknowledge a relationship between the fire and the smoke on the horizon. Maybe if fishfry would accept the possibility of a relationship, a closer look would reveal smoke rising from the fire.
  • Can it be that some physicists believe in the actual infinite?
    If not specified, then at least strongly implied in the same post:Luke

    I really don't see how the qualification "numerical" is relevant , or even meaningful in the context of dots on a plane. So I don't see why you think it was implied. Fishfry is not sloppy and would not have forgotten to mention a special type of order was meant when "no inherent order" was said numerous times.

    You wrote 'Russel' twice. It's 'Russell'.TonesInDeepFreeze

    Sorry "Bertie", as fishfry says.

    Tracking recent points Metaphysician Undercover has either evaded or failed to recognize that he was mistaken.TonesInDeepFreeze

    I believe all the relevant points were addressed. You don't seem to know how to read very well.

    I wasn't born wearing a hat but I can go buy one. The idea that a thing can't gain stuff it didn't have before is false. But I've already shown you how we impose order on a set mathematically. We start with the bare (newborn if you like) set. Then we pair it with another, entirely different set that consists of all the ordered pairs of elements of the first set that define the desired order.fishfry

    The problem is that your demonstration was unacceptable because you claimed to start with a set that had no order. A newborn is not a thing without order, so the newborn analogy doesn't help you.

    So we start with the unordered set {a,b,c}.fishfry

    You are showing me an order, "a" is to the right of "b" which is to the right of "c". And even if you state that there is a set which consists of these three letters without any order, that would be unacceptable because it's impossible that three letters could exist without any order.

    If you insist that it's not the letters you are talking about, but what the letters stand for, or symbolize, then I ask you what kind of things do these letters stand for, which allows them to be free from any order? To me, "a", "b", and "c" signify sounds. How can you have sounds without an order? Maybe have them all at the same time like a musical chord? No, that constitutes an order. Maybe suppose they are non-existent sounds? But then they are not sounds. So the result is contradiction.

    I really do not understand, and need an explanation, if you think you understand how these things in the set can exist without any order. What do "a", "b", and "c" signify, if it's something which can exist without any order? Do you know of some type of magical "element" which has the quality of existing in a multitude without any order? I don't think so. I think it's just a ploy to avoid the fundamental laws of logic, just like your supposed "two spheres" which cannot be distinguished one from the other, because they are really just one sphere.

    Also: "How is it possible that a set can be ordered in one way and in a contrary way at the same time, without contradiction?" Like ordering schoolkids by height, or alphabetically by name. Two different ways to order the same set. I can't understand why this isn't obvious to you.fishfry

    Those are different ways, but not contrary ways.

    A set has no inherent order. That's the axiom of extensionality.fishfry

    Huh, all my research into the axiom of extensionality indicates that it is concerned with equality. I really don't see it mentioned anywhere that the axiom states that a set has no inherent order. Are you sure you interpret the axiom in the conventional way? I have no problem admitting that two equal things might consist of the same elements in different orders. We might say that they are equal on the basis of having the same elements, but then we cannot say that the two are the same set, because they have different orders to those elements, making them different sets, by that fact.

    You can't visualize two identical spheres floating in an otherwise empty universe? How can you not be able to visualize that? I don't believe you.fishfry

    Are you serious? If I can imagine them as distinct things, I know that they cannot be identical. That's the law of identity, the uniqueness of an individual,. A fundamental law of logic which you clearly have no respect for.

    I did not make this up. I'm not clever enough to have made it up. I read it somewhere. Now you've read it.fishfry

    The argument of Max Black fails because pi is irrational. There is no such thing as a perfectly symmetrical sphere. The irrationality of pi indicates that there cannot be a center point to a perfect circle. Therefore we cannot even imagine an ideal sphere, let alone two of them.

    No, on the contrary. Mathematicians love festering falsities. And of course even this point of view is historically contingent and relatively recent. In the time of Newton and Kant, Euclidean geometry was the true geometry of the world, and Euclidean math was true in an absolute, physical sense. Then Riemann and others showed that non-Euclidean geometry was at least logically consistent, so that math itself could not distinguish truth from falsity. Then Einstein (or more properly Minkowski and Einstein's buddy Marcel Grossman) realized that Riemann's crazy and difficult ideas were exactly what was needed to give general relativity a beautiful mathematical formalism. The resulting "loss of certainty" was documented in Morris Kline's book, Mathematics: The Loss of Certainty. Surely the title alone must tell you that mathematicians are not unaware of the issues you raise.fishfry

    Yes, it seems like mathematics has really taken a turn for the worse. If you really believe that mathematicians are aware of this problem, why do you think they keep heading deeper and deeper in this direction of worse? I really don't think they are aware of the depth of the problem.
  • Can it be that some physicists believe in the actual infinite?
    Hopefully others will correct me if I'm wrong but, as I understand it, the point iof the diagram of "dots" is that the elements of the set have no inherent numerical order or sequence. Otherwise, you should be able to number the elements from 1 to n and explain why that is their inherent order.Luke

    Actually "numerical order" (whatever that is supposed to mean in reference to a diagram of dots) was not specified. It was simply asserted that the elements have no inherent order.

    I don't speak for fishfry, but the second 'you' above appears to include both of us. But I have never said, implied, or remotely suggested, that truth and falsity are irrelevant to pure mathematics. So you are lying to suggest that I did.TonesInDeepFreeze

    Are you taking lessons from Luke on how to make strawman interpretations? Read the quoted passage. Fishfry and Tones are in denial of the logical fallacies, and "you" (directed at fishfry only) talk about truth and falsity not being relevant to pure mathematics. How is that sentence so difficult for you to read properly?

    You ignore what I said. That is your favorite argument tactic:TonesInDeepFreeze

    Yes, I am finding that to be the best tactic in dealing with the type of nonsense you throw at me.

    What is "THE INHERENT" order you claim that the dots have?TonesInDeepFreeze

    The one in the diagram. Take a look at it yourself, and see it.

    Start with what people say in everyday language.TonesInDeepFreeze

    I have no problem with what people say in everyday language, about the number of students in the class, the number of chairs in the room, the number of trees in the forest, etc., where I have the problem is with what mathematicians say about numbers alone, without referring to "the number of ..."

    Sets of cardinality greater than 1 have more than one ordering.TonesInDeepFreeze

    Look at it this way Tones. As you describe sets, order is an attribute, or property of the set. How is it possible that a set can be ordered in one way and in a contrary way at the same time, without contradiction? Fishfry resolves this by saying that a set has no order, so order is not a property of a set. But then it appears like fishfry wants to smuggle order in, with some notion of possible orders. However the set is already defined as not having the property of order, therefore order is impossible.

    Between you and fishfry, the two of you do not even seem to be in agreement as to whether a set has order or not. Fishfry says that a set has no inherent order. You say that not only does a set have order, but it has a multitude of different orders at the same time. See what happens when you employ contradictory axioms? Total confusion.

    Nobody is claiming math is absolute truth but you.fishfry

    Wow, that's an even worse interpretation of what I'm saying than TIDF's terrible interpretation. I argue to demonstrate untruths in math, and you say I'm claiming math is absolute truth. This thread has gone too far. I think you're cracking up.

    Don't you think he was recognizing and responding to exactly the point you are making?fishfry

    No, I have read a fair bit of Russel and he was in no way responding to the same points I'm making. More precisely he was helping to establish the situation which I am so critical of. Remarks like that only inspire mathematicians to produce more nonsense.

    Try understanding the axiom of extensionality.fishfry

    We've been through the axiom of extensionality you and I, in case you've forgotten. It's where you get the faulty idea that equal to, means the same as.

    One example that comes to mind is the famous counterexample to the identity of indiscernibles, in which we posit a universe consisting of two identical spheres. You can't distinguish one from the other by any property, even though the spheres are distinct. This example also serves as a pair of objects without any inherent order.fishfry

    Contradiction again. If you cannot distinguish one from the other, you cannot say that there are two. To count two, you need to apprehend two distinct things. But to say that you cannot distinguish one from the other means that you cannot apprehend two distinct things. Therefore it is false to say that there are two. So you are just proposing a contradictory scenario, that there are two distinct spheres which cannot be distinguished as two distinct spheres (therefore they are not two distinct spheres), hoping that someone will fall for your contradiction. Obviously, if one cannot be distinguished from the other, they are simply two instances of the same sphere, and you cannot say that there are two. And to count one and the same sphere as two spheres is a false count.

    Reality? I make no claims of reality of math. I've said that a hundred times. YOU are the one who claims math is real then complains that this can't possibly true.fishfry

    Coming from the Platonic realist who claims the reality of "mathematical objects".

    But math makes no claims as to the truth of "this."fishfry

    Right, just like the statement from Russel. That's why there is a real need for metaphysicians to rid mathematics of falsity. The mathematicians obviously do not care about festering falsities.

    .
  • Can it be that some physicists believe in the actual infinite?
    A contradiction is a statement and its negation.TonesInDeepFreeze

    Contradiction may be implied. Here's Wikipedia's opening statement:
    'In traditional logic, a contradiction consists of a logical incompatibility or incongruity between two or more propositions."

    The problem is that you refuse to recognize that an arrangement of points on a plane, logically implies order, therefore "an arrangement of points on a plane without order" is contradictory.

    This was in reference to my question, Why don't you treat math like chess, and accept it on its own terms?fishfry

    Don't you see that I said math is not like chess. Therefore I do not treat math like chess. I answered your question.

    Then your complaint is with the physicists, engineers, and others; and not the mathematicians, who frankly are harmless.fishfry

    Obviously not, as you've already noticed,

    Again, your complaint is with those mis-applying math or applying math to bad ends.fishfry

    No, my complaint is with the fundamental principles of mathematicians, As explained already to you, violation of the law of identity, contradiction, and falsity. You, and Tones alike (please excuse me Tones, but I love to mention you, and see your response. Still counting?), are simply in denial of these logical fallacies existing in the fundamental principles of mathematics, and you say truth and falsity is irrelevant to the pure mathematicians.

    Particles? Dots? What are those? In math, the elements of sets are other sets. There are no particles or dots. Again, you confuse math with physics.fishfry

    In case you forgot, you posted a diagram with dots, intended to represent a plane with an arrangement of points without any order. This is what I argued is contradictory, "an arrangement... without order". And this was representative of our disagreement about the ordering of sets. You insisted that it is possible to have a set in which the elements have no order. You implied that there was some special, magical act of "collection" by which the elements could be collected together, and exist without any order. What you are in denial of, is that if the elements exist, in any way, shape, or form, then they necessarily have order, because that's what existence is, to be endowed with some type of order.

    You tell me, just imagine a plane, with points on the plane, without any order, and I tell you I can't imagine such a thing because it's clearly contradictory. If the points are on the plane, then they have order. And you just want to pretend that it has been imagined and proceed into your smoke and mirrors tricks of the mathemajicians. I'm sorry, but I refuse to follow such sophistry.

    I can't argue with the fantasies in your head. Set theory is what it is.fishfry

    Why not give it a try? I can argue with the fantasies in your head, demonstrating that they are contradictory. So please explain to me how you think you can have a collection of elements, points, or anything, and that collection has no order. Take this fantasy out of your head and demonstrate the reality of it.

    There are no dots. I don't know what dots are. I tried to give you a visual example but perhaps that was yet another rhetorical error. I should just refer you to the axiom of extensionality and be done with it, because in truth that is all there is to the matter.fishfry

    The dots. I believe, were supposed to be a representation of points on a plane. The points on a plane, I believe, were supposed to be a representation of elements in a set. And you were using these representations in an attempt to show me that there is no inherent order within a set. So, are you ready to give it another try? Demonstrate to me how there could be a set with elements, and no order to these elements.

    I've explained to you the problem. You describe the set as a sort of unity. And you want to say that the parts which compose this unity have no inherent order. Do you recognize that to be a unity, the parts must be ordered? There is no unity in disordered parts. Or are you going to continue with your denial and refusal to recognize the fundamental flaws of set theory?
  • Can it be that some physicists believe in the actual infinite?
    First thing I really want to know what are the bad things that you think mathematicians and scientists are going to cause to happen?TonesInDeepFreeze

    Come on TIDF, don't you see that as a ridiculous question? If one could predict the bad things that were going to happen, before they happened, then we could take the necessary measures to ensure that they don't happen. It's like asking me what accident are you going to have today. It's a matter of risk management. If the mathematics employed in any given situation is faulty, the risk is increased. The biggest problem, I think, is the complete denial of the faults, from people like you. This creates a false sense of certainty. That's why it's like religion, you completely submit to the power of the mathematics, with your faith, believing that your omnibenevolent "God", the mathematics would never mislead you.

    Suppose the number 2 is not distinct from the numeral '2'. Suppose also that the number 2 is not distinct from the Hebrew numeral for 2. Then both the numeral '2' and the Hebrew numeral for 2 are the same. But they are not.TonesInDeepFreeze

    The symbols are not the same, nor ought they be said to be the same, or to say the same thing. They ought not be said to say the same thing, because different cultures have different ways of looking at the world. Where's the problem with that? If someone translates a passage of philosophy from ancient Greece, we ought not say that the translation says the same thing as the original. Something is always lost in translation. Likewise, we ought not say that the numeral 2 says the same thing as the Hebrew symbol. This would be very clear to you if you would consider all the different numbering systems discussed on this forum, natural, rational, real, cardinals, ordinals, etc.. The same symbol has a different meaning depending on the system. If we do not keep these distinguished, and adhere to the rules of the specific system, we have equivocation.

    That's a picture of dots in a disk. It's not an ordering.TonesInDeepFreeze

    If you refuse to acknowledge that there's an order to those dots, then I don't see any point in proceeding with this discussion.

    . That means for you to state which dots come before other dots, for each dot.TonesInDeepFreeze

    Order is not necessarily temporal. And, modern physics looks at time as the fourth dimension of space. So if you cannot see order in an arrangement on a two dimensional plane, I don't see any point in discussing "order" with you.

    The symbols do represent how many individuals there are. What do you mean by “directly”?Luke

    If you follow what is taught in math, the symbol "2" represents a mathematical object which is called a number. The number represents how many individuals there are.

    Do you recognize that the word 'tree' is not a tree?TonesInDeepFreeze

    Of course, the word "tree" might be used as a symbol, to represent a tree.

    But you fail to recognize that the word 'two' or the symbol '2' are not the number 2.TonesInDeepFreeze

    You misunderstand. What I am asking is why can't the symbol "2" be used to represent a quantity of two individuals, just like the word "tree" is used to represent a tree? Why must the symbol "2" represent a mathematical object, the number two, and the number two represents a quantity of two individuals? We don't say that the word "tree" represents a conceptual object, tree, and this concept represents the individual tree.

    In reality we simply use the word "tree" to represent a tree, and we use the symbol "2" to represent a quantity of two individuals. There is no conceptual object, or mathematical object in between. So if someone states as a premise, that "2" represents a mathematical object, the number two, this would be a false premise.

    The number does not represent how many individuals there are.

    The number is how many individuals there are.
    Luke

    Well no, this is not true. The number is how many individuals it is said that there are. The number is supposed to be what the numeral stands for. It is conceptual, and a representation of a particular quantity of individuals. Being universal, we cannot say that it is actually a feature of the individuals involved, but a feature of our description, therefore a representation. That's why the OED defines "number" as "an arithmetical value representing a particular quantity and used in counting and making calculations." If the number is not a representation of how many individuals there are, but actually "how many individuals there are", there would be no possibility of error, or falsity. If I said "there are 2 chairs", and the supposed mathematical object, the number 2 which is said to be signified by the numeral "2" was "how many individuals there are", rather than how many there are said to be, how could I possibly lie?
  • Can it be that some physicists believe in the actual infinite?
    You said your teacher insisted that "the numeral is not the number" and that you couldn't understand it. But you also said that you had no problem with basic arithmetic. My point was that you must have understood that "the numeral is not the number" in order to do basic arithmetic.Luke

    No, as I explained. The numeral 2 represents how many objects there are. We could also call that symbol the number 2, which represents how many objects there are. There is no need to assume that the number 2 is distinct from the symbol, to do basic arithmetic..

    But "1" or "2" are the number of individuals, not the individuals.Luke

    If that were the case, I'd be fine with it, but it's not what I was told. I was told that "1" and "2" are numerals, symbols, and there is also something else, called the numbers 1 and 2. The numbers are distinct from the numerals, as what is represented by the numerals. So, I was told that "1" and "2" are symbols, which represent the numbers 1 and 2, and the number represent how many individuals there are. Why not just say that the symbols "'1" and "2" represent how many individuals there are, directly?

    That is one of the best, most risible, evasions of a challenge I've ever read. What is "the order they actually have" as opposed to all the others? Saying that they have the order they "actually" have is not telling us what you contend to be the order nor how other orderings are not the "actual" ordering. You are so transparently evading and obfuscating here.TonesInDeepFreeze

    Fishfry posted the order, it's right here:

    What more do you want?

    When confronted with the challenge of points in a plane, a reasonable response by you would be "Let me think about that." But instead you reflexively resort to the first specious and evasive reply that comes to you and post it twice with supposed serious intent. That indicates once again your lack of intellectual curiosity, honesty or credibility.TonesInDeepFreeze

    Look, if the dots exist on a plane, they have positions on that plane, and therefore an exact order which is specific to that particular positioning. They do not have any other order, or else they would not be those same dots on that plane. Take a look at that posting of fishfry's and see the order which the dots have, on that plane, and tell me how they could have a different order, or no order at all, and still be those same dots on that same plane.

    If you cannot apprehend this simple fact, then tell me what is so difficult for you.

    You were presented with points in a plane, without being given a stated particular ordering.TonesInDeepFreeze

    How can you not see that 'points in a plane without a particular ordering' is a blatant contradiction? If the points exist on a plane, then they each have a particular position on that plane, as demonstrated in fishfry's post, and it is impossible that they have no particular order, because the particular order has been posted. Can you grasp this fact?

    One could just as well say 'unstated'.TonesInDeepFreeze

    The problem is, that it is stated. It is stated that they exist on a plane. Therefore each point has a position on that plane unique to itself. Not one of these points makes a line, nor occupies a section of the plane, they each have a specific position. Therefore there is necessarily an order to these points, their positions on that plane, according to what is stated. To give them no order you'd have to remove them from their positions on the plane.

    Suppose we just assume a multitude of points, without any spatial reference, no dimensions or anything, just points. Then we have the question of what distinguishes one point from another. It is stipulated that there is a multitude of points. If there is no spatial reference, therefore no space separating one point from another, what makes them distinct from one another? How can we assume a multitude of points when we posit no principle whereby one point is distinguished from another point? And if we posit a principle of separation other than space, (suppose one is later in time than another, or something like that), then isn't this a principle of order. it is impossible to posit a multitude of points without implying order.

    It isn't I who is evading the issue. All those people who simply assume that it is possible for a multitude of points to exist without any order, are the one's evading the issue, because such a scenario is logically impossible.

    It is not the case that there are not orderings. The point though is that there is not a single ordering that is "THE actual ordering". There are many orderings and they are actual even though 'actual' is gratuitious.TonesInDeepFreeze

    Again, look at fishfry's post:
    Do you not see that there is an actual order to those dots on the plane? How could there be "many orderings" if to give them a different order would be to change their positions? Then it would no longer be those dots on that plane. And if your intent is to abstract them, remove them from that plane, then they are no longer those dots on that plane. Why is something so simple so difficult for you to understand?

    First, of course, is that we may take a collection of dots as given, without stipulating that a particular person placed the dots herself.TonesInDeepFreeze

    OK, but do you agree that something must have caused those dots to be where they are, i.e. given them that order?

    Second, let's even suppose that "actual order" is a function of a person placing the dots. Say that Joe places the dots in temporal succession and Val places the dots in a different temporal succession. But that both collection of dots look exactly the same to us. So there's "Joes actual (temporal) order" and "Val's actual (temporal) order", but no one can say which is THE actual order of the collection of dots we are looking at without Joe and Val there to tell us (if they even remember) the different order of placement they used.TonesInDeepFreeze

    I am talking about their spatial ordering, their positioning on the plane, like what is described by a Cartesian system. Do you not apprehend spatial arrangements as order?
  • Can it be that some physicists believe in the actual infinite?
    Meanwhile, you're not even familiar with the distinction between semantics and syntax and the notion of model theoretic truth.TonesInDeepFreeze

    That's not true. I simply don't accept it as a realistic notion of "truth", and don't want to waste my time discussing it.

    In any event, can you please respond to my point about chess? Surely if you learned to play chess, or any other artificial game -- monopoly, bridge, checkers, baseball -- you were willing to simply accept the rules as given, without objecting that they don't have proper referents in the real world or that they make unwarranted philosophical assumptions. If you could see math that way, even temporarily, for sake of discussion, you might learn a little about it. And then your criticisms would have more punch, because they'd be based on knowledge. I wonder if you can respond to this point. Why can't you just treat math like chess? Take it on its own terms and shelve your philosophical objections in favor of the pleasure of the game.fishfry

    I didn't answer, because it's not relevant. Philosophy is not a game in which you either accept the rules of play or you don't,, neither is theoretical physics such a game, nor is what you call "pure mathematics" (or as close to "pure" as is possible). In these fields we determine, and create rules which are deemed applicable. So your analogy is not relevant, because the issue here is not a matter of "will you follow the rules or not", it's a matter of making up the rules. And there's no point to arguing that people must follow rules in the act of making up rules because this is circular, and does not account for how rules come into existence in the first place.

    It makes no sense to anyone else either. This is well known. Especially in terms of quantum fields being "probability waves." That makes no sense to me. Physics has perhaps lost its way. Many argue so. You and I might well be in agreement on this.fishfry

    Ok, we've found a point of agreement, physics has lost it's way. Do you ever think that there must be a reason for this? And, since physics is firmly based in mathematics, don't you see the implication, that perhaps the root of the problem is actually that mathematics has lost its way.

    Ok. I get that. And I've asked you this many times. You don't want to play the game of math. So then why the energetic objection to it? After all if someone invites me to play Parcheesi and I prefer not to, I don't then go on an anti-Parcheesi crusade to convince the enthusiasts of the game that they are mis-allocating their time on a philosophically wrong pursuit. So there must be more to it than that. With respect to a perfectly harmless pastime like Parcheesi or modern math, one can be for, against, or indifferent. You have explained why you are indifferent; but NOT why you are so vehemently against.fishfry

    Physicists, engineers, and others, applying mathematics in the world have a huge impact on the world in which I live, unlike Parcheesi players. Despite arguments that mathematical objects exist in some realm of eternal truth where they are ineffectual, non-causal, I think it is undeniable, that the mathematical principles which are applied, have an impact on our world. I believe it is inevitable that bad mathematics will have a bad effect.

    That people vehemently support and defend fundamental axioms which may or may not be true, refusing to analyze and understand the meaning of these axioms, simply accepting them on faith, and applying them in the conventional way, in new situations, with little or no understanding of the situation, or the axioms, to me is a clear indication that bad results are inevitable.

    Makes no sense. It's perfectly clear that you can order a random assemblage of disordered points any way you like, and that no one order is to be preferred over any other.fishfry

    You do not seem to be making any effort to understand this fundamental principle, which is the key to understanding what I am arguing. A group of particles, or dots (we cannot really use "points" here because they are imaginary) existing in a spatial layout, have an order by that very fact that they are existing in a spatial arrangement. Yes, they can be "ordered any way you like", but not without changing the order that they already have. The order which they have is their actual order, whereas all those others are possible orders.

    Do you understand and accept this? Or do you dispute it, and know some way to demonstrate how a spatial arrangement of dots or particles could exist without any order? It's one thing to move to imaginary points, and claim to have a specific number of imaginary points, in your mind, which have no spatial arrangement, but once you give them a spatial arrangement you give them order. Even if we just claim "a specific number of points", we need to validate that imaginary number of points without ordering them. This is what Tones and I discussed earlier. How can we count a specific number of points without assigning some sort of order to them? To count them we need to distinguish one from the other by some means or else we do not know which ones have been counted and which have not been counted. So even to have "a specific number of points", imaginary, in your mind, requires that they have an order, or else that specific number cannot be validated.

    Well yes, the random number generator I used was actually determined at the moment of the big bang, if one believes in determinism. But you're making a point about randomness, not about the order of the points. You are not persuading me with your claim that a completely random collection of points has an inherent order.fishfry

    Yes, I'm making a point about "randomness" because you are using the term "random" to justify your claim that a bunch of dots in a spatial arrangement could have no order. You simply say, the points are "randomly distributed" and you think that just because you say "randomly", this means that there actually could be existing dots in a spatial assemblage, without any order. But your use of the term does not support your claim. There was a process which placed the dots where they are, therefore they were ordered by that process, regardless of whether you call that process "random" or not.

    You don't want to read the Wiki piece on order theory.fishfry

    I looked at the Wikipedia entry, and it does not appear to cover the issue of whether existing things necessarily have an order or not. So it seems to provide nothing which bears on the point which I am trying to get you to understand.

    Actually it doesn't make initial sense. Moving from one letter to the next is always a whole step, except from B to C and from E to F. And then double flats move you down a letter except from C to Cbb and from F to Fbb, and double sharps move you up a step except from B to B## and from E to E##.TonesInDeepFreeze

    All this, what you say, comes later, it's not "initial". What is "initial" is that you learn a specific fingering, and it sounds good, therefore it makes sense. The part that doesn't make sense is when you move deeper into the theory. This is just like mathematics. The initial practice makes sense, learning addition, multiplication, pi, Pythagorean theorem, etc.. All these simple procedures make perfect sense, you learn a procedure, apply it, and it works. However, then there is layers of theory piled on after the fact, and this is where the sense gets lost, because the theory doesn't necessarily follow what is actually the case.

    You could see the quantity of objects but not the number of objects?Luke

    Right, I don't look at two chairs and see the number 2 there.

    You must have already understood that the number is not the numeral in order to do simple arithmetic. Otherwise, the addition of any two numbers (i.e. numerals) would always equal 2 (numerals).Luke

    No, the numeral represents a quantity, and a quantity must consist of particulars, or individual things. So "2"" represents a quantity, or number of individuals, two, and "1" represents a quantity of one individual. What is added or multiplied is the quantity or number of individuals. The number is of the individual, a predication, and what is added or subtracted is the individuals, not the number. Have two individuals, add two more individuals, and you have four individuals. See, the operation is a manipulation of individuals, not a manipulation of some imaginary "numbers". And, the fact that we can make the individuals imaginary, such that the manipulation of individuals involves imaginary individuals, does not change the reality that the individuals are what is manipulated, not the numbers.

    I didn't need a teacher to make me aware that numerals are not numbers. '2' and 'two' refer to the same thing. But '2' is not 'two'. So whatever they refer to is something else, which is a number, which is an abstraction. Rather than be a benighted bloviating ignoramus (such as you), I could see that thought uses concepts and abstraction and our explanations, reasoning and knowledge are not limited to always merely pointing at physical objects.TonesInDeepFreeze

    When I was seven years old I had no idea what an abstraction is, or what a concept is. I didn't understand this until much later when I studied philosophy. This is why mathematics really is like religion. We are required just to accept the rules, on faith, follow and obey, without any real understanding. 'There really is a number two there, accept and obey'. 'There really is a God there, accept and obey'.
  • Can it be that some physicists believe in the actual infinite?


    That about sums it up. Math is like religion, a whole bunch of bullshit which we are told to accept on faith.
  • Can it be that some physicists believe in the actual infinite?


    Sorry Tones, but we're so far apart on these principles of truth and falsity, that I see no place to start, or any point to it. I look at truth as corresponding with reality.

    It's like saying that learning to play a musical instrument is tremendously difficult at first so people should just give up.fishfry

    I don't think the analogy is good. I learned to play a musical instrument, and it always made sense to me, right from the start. I learned philosophy and it always made sense to me. The point is that I proceeded because it made sense to. If mathematics requires self-deception, then this does not make sense to me, and so I will not proceed. Many people would not become athletes because there is much physical pain involved in the practice. This might be similar to my refusal to learn math because physical pain, and self-deception may both be viewed as harmful. Some people though will put up with the physical pain because they see a greater good in being an athlete. Maybe you put up with the self-deception of mathematics because you apprehend a greater good.

    It's true of virtually EVERYTHING that at first, the subject makes no sense. You just do as you're told, do the exercises, do the homework, do the problem sets without comprehension, till one day you wake up and realize you've learned something. It must be that you've learned nothing at all in your life, having given up the moment something doesn't make immediate sense to you.fishfry

    Again I don't agree with this. Many things I've learned made sense to me right from the start. Even learning the numerals, how to count, and simple arithmetic, addition, subtraction multiplication, division made sense to me right from the start. It was only later, when they started insisting that there existed a number, distinct from the numeral, that things started not making sense.

    I had a similar experience later with physics. We learned basic physics, then we learned about waves, and got to experiment in wave tanks. We learned that waves were an activity within a medium and we were shown through diagrams how the particles of the medium moved to formulate such an activity. All of this made very much sense to me. Then we were shown empirical proof that light existed as waves, and we were told that light waves had no medium. Of course this made no sense to me.

    When you learned to play chess, or any game -- bridge, poker, whist -- do you say, "Oh this is nonsense, no knight REALLY moves this way," and quit? Why can't you learn a formal game on its own terms? If for no other reason than to be able to criticize it from a base of knowledge rather than ignorance? If you've never seen a baseball game, it makes no sense. As you watch, especially if you are lucky enough to have a companion who is willing to teach you the fine points of the game, you develop appreciation. Is that not the human activity called LEARNING? Why are you morally opposed to it?fishfry

    When I learn a game, I must learn the rules before I play. If the rules are such that I have no desire to play the game, I do not play. It's not a question of whether the game makes sense or not, so the analogy is not a good one.

    Finally, even your basic objection to unordered sets is wrong. Imagine a bunch (infinitely many, even) of points randomly distributed on the plane or in 3-space. Can't you see that there is no inherent order? Then you come by and say, "Order them left to right, top to bottom." Or, "Order them by distance from the origin, and break ties by flipping a coin." Or, "Call this one 1, call this one 2, etc."fishfry

    Finally, you decided to address the issue. If there are points distributed on a plane, or 3d space, the positioning of those points relative to each other is describable, therefore there is an inherent order to them. If there was no order their positioning relative to each other could not be described..

    You say that they are "randomly distributed", to create the illusion that there is no order. But the fact is that they must have been distributed by some activity, and their positioning posterior to that activity is a reflection of that activity, therefore their positioning is necessarily ordered, by that activity.

    So just adopt the formalist perspective. There are only numerals and the rules for manipulating them. It's a game. What on earth is your objection? Were you like this when you learned to play chess? "There is no knight!" "The Queen has her hands full with Harry and that witch Meghan!" etc. Surely you're not like this all the time, are you?fishfry

    If you think you can interpret the rules as we go, then I'd advise you not to play any games with me.

    What is the inherent order of the points in this set? Can you see that the points are inherently disordered or unordered, and that we may impose order on them arbitrarily in many different ways? Pick one and call it the first. Pick another and call it the second. Etc. What's wrong with that?fishfry

    The inherent order is the exact spatial positioning shown in the diagram. If any point changes location, then the order is broken. Is that so difficult to understand? A spatial ordering is not a matter of first and second, that is a temporal ordering.
  • Can it be that some physicists believe in the actual infinite?
    Is it possible for an axiom to be false? Please explain. Don't refer to inconsistency. :roll:jgill

    For sure it's possible, the difficulty would be to demonstrate falsity, and this would require reference to some sort of inconsistency. What else could demonstrate falsity other than a reference to some form of inconsistency?.

    An axiom is expressed as a bunch of symbols, so it must be interpreted. Interpretation requires that it be related to something else, and here we can have inconsistency and contradiction. So the author of an axiom will intentionally avoid internal inconsistency, or contradiction, but to understand, or employ the axiom it must be related to something external to it. If in interpretation, there is a contradiction with another principle then one or both must be false. If the other is a principle one holds to be true, then the axiom must be viewed as false.

    Take the axiom of extensionality for example. Here's how Wikipedia states it:
    ".Given any set A and any set B, if for every set X, X is a member of A if and only if X is a member of B, then A is equal to B.
    (It is not really essential that X here be a set — but in ZF, everything is. See Ur-elements below for when this is violated.)"

    Further, Wikipedia says it is interpreted like this:
    " To understand this axiom, note that the clause in parentheses in the symbolic statement above simply states that A and B have precisely the same members. Thus, what the axiom is really saying is that two sets are equal if and only if they have precisely the same members."

    Notice there is an exchange of "equal" and "same". As I've argued in other threads, if we adhere to the law of identity, this is a false use of "same". To resolve this issue, one might deny the law of identity, or insist on a faulty interpretation of that law. I think that approach is futile, so we must look directly at the axiom of extensionality and see what "equal" means in that context. If we can interpret in a way which does not employ "same" we might avoid the falsity.

    Which axioms of finite set theory do you think are false?TonesInDeepFreeze

    Read above.

    I think you are just not cut out for mathematical abstraction and should pick another major.fishfry

    I found that out at about tenth grade, despite living in an extremely mathematically inclined family. Prior to that though, I had difficulty even in grade school, when the teachers insisted on distinguishing numbers from numerals. Where are these "numbers" that the teacher kept trying to tell us about, I thought. All I could see is the numerals, and the quantity of objects referred to by the numeral. But the teacher insisted no, the numeral is not the number. So it took me very long to figure out that the numeral was not the "number" which the teacher was talking about, and that the number was just some fictitious thing existing in the teacher's mind, so I shouldn't even bother looking for it because I have to make up that fiction in my own mind, for there to be a number for me to "see". Of course, I chose philosophy as a major instead, because philosophy provides a solid, grounded understanding of abstraction, rather than simply insisting on the existence of fictitious "numbers" existing in people's minds, and trying to convince people to create those fictitious things in their minds.

    Enough. You win. You wore me out.fishfry

    Simply put, I'm right and you're wrong. Nah, nah, let's go back to grade school. You should have chosen philosophy instead of math, if you wanted to learn the truth about abstraction.

    Pick another major.fishfry

    I have picked another major, philosophy. That's why I'm discussing this in a philosophy forum. Care to join me? Or will you simply assert that mathematics is far superior to philosophy, then run off and hide under some numbers somewhere when the unintelligibility of your principles is demonstrated to you?

    You may well have a philosophical point to make, but you are preventing yourself from learning the subject. And it's learning the subject that would allow you to make more substantive rather than naive and obfuscatory objections.fishfry

    You seem to have a very naive outlook. How do you propose that one proceed toward "learning the subject", when the most basic principles in that subject do not make any sense to the person? To me, the distinction between a numeral and a number is fundamentally unintelligible, as a falsity, because it requires producing a fictitious thing in my mind, and then talking about that fictitious thing as if it is a truth. Therefore proceeding into "learning the subject" requires an initial step of dishonesty, self-deception, then deceiving others in talking about this issue I have deceived myself about. I am not prepared to make that step of dishonesty. Making that initial step of self-deception is the first step toward misunderstanding, not toward understanding.
  • Can it be that some physicists believe in the actual infinite?
    We prove from axioms.TonesInDeepFreeze

    If an axiom is false then the proof is unsound.
  • Can it be that some physicists believe in the actual infinite?
    You also told us that you assume numbers are objects.Luke

    Notice, the quoted passage says numbers are assumed when "you" count. And, it's your count that I argue is false. .

    You are back to your pathetic strawman misinterpretation, for the sake of ridicule.

    It's not that sets don't have orderings. It's that sets have many orderings (though in some cases we need a choice axiom or an axiom weaker than choice but still implying linear ordering). So the point is that there is no single ordering that is "the ordering".TonesInDeepFreeze

    If we assume that a set necessarily has an ordering, but it could be one of many possible orderings, by what principle can we say that each of these many possible orderings constitutes the same set? What type of entity is an "element", such that the identity of a unity of numerous elements is based solely in the identity of its parts with complete disregard for the relations between those parts? Isn't this a sort of fallacy of composition?
  • Can it be that some physicists believe in the actual infinite?
    You assume that numbers are objects but argue that numbers are not objects? Sounds about right given your confusion.Luke

    Do you understand the meaning of the word "if"? I don't think it's me who's the confused one.

    By the axiom of extensionality, a set is entirely characterized by its elements, without regard to order. So the set {a,b,c} is the exact same set as {b,c,a} or {c,b,a}.fishfry

    That "elements" may exist without an order is the falsity I've explained to you already. And if we say that "element" indicates an abstraction, then it is a universal, not a particular, and to assume that an abstraction is a particular is a category mistake.

    Let's assume a special type of "element", created, or imagined specifically for set theory. This type of element can exist in a multitude without that multitude having any order. Each of these elements would have no spatial or temporal relation to any other element, or else there would be an order, according to that relation. We could say that they are like points, but without a spatial reference, so that we cannot draw lines between them etc., because there is no order to them. But if they were like points, without spatial relations constituting order, there would be no way to distinguish one from another

    Unlike points though, there is something which distinguishes one element from another, so that in the set of (a,b,c,), "a" does not represent the same thing as "b" does. Can I conclude, that the distinct elements are separated from one another, and distinguished one from another, by something other than space? To make them distinct and individual, they must have separation, but the separation cannot be spatial or else they would have an order, by that spatial relation.

    Do you see, that from this premise alone, we cannot give any order to any set? To give a set an order would be a violation of the fundamental meaning of "element" which allows that elements can exist as particulars without any spatial temporal; relations. To be able to talk about an order within a set, would require that we transform the elements into something other than "elements", something which could have spatial or temporal relations and therefore an order. Remember, even quantity requires spatial-temporal separation between one and the other, to distinguish separate individuals.

    Now we want to layer on the concept of order. To do that, we define a binary relation, which I'll call <, and we list or designate all the true pairs x < y in our set. So for example to designate the order relation a,b,c, we would take the base set {a,b,c}, and pair it with the set of ordered pairs {a < b, a < c, b < c}. Then the ordered set is designated as the PAIR ({a,b,c,}, {a < b, a < c, b < c}). I hope this is clear.fishfry

    No, sorry, it's not clear at all. You have imagined distinct "elements" which exist without any spatial or temporal relations, thereby having no order, though they are somehow distinct individuals. Now you want to add order. You have already defined order out of the set, to add it in, is blatant contradiction.

    The basic takeaway is that a set has no inherent order. We impose an order on a set by PAIRING the set with an order relation.fishfry

    What I need, is a clear explanation of what an "order relation" is. What type of relation are you attempting to give to these elements, which gives them an order, when you've already stipulated the premise that they have no order?

    The point is, that to give them existence without order requires a special conceptualization which I described above. Now if we want to proceed with that conceptualization, and now bring in principles of order, we must do so in a consistent way. So, we need to describe what separates one element from another, since it's clearly not space, and what makes it distinct as an element, in terms which do not give it a relationship to the others, to allow that the multitude of them do not already have any order, Then we need a principle by which order can be initiated within this non-ordered type of separation.

    A set is a collection of elements, regarded as an individual thing, a set.fishfry

    Clearly, for a group of things to be regarded as an individual thing, "unity" is implied. And, it is quite clear that for a group of parts to form a unity, it is necessary that the parts exist with some sort of order. So this statement directly contradicts you assertion that a set has no inherent order.

    Perhaps it's the distinction between a bunch of athletes and a team, or a collection of birds and a flock. I'm sure some philosophers have found ways to describe this. A set is a collection of elements, along with the concept of their set-hood. That's the best I can do!fishfry

    Do you see the contradiction? You describe a "set" as a thing, a unity, like a team, but then you say that there is no inherent order to this unified thing. Do you see how ridiculous this is, to say that there exists a unified thing, composed of parts, but there is no order to the parts? How in the world are we supposed to conceive of a unity of parts which have no order? To say that they are a unity is to say that they have order.

    A set is inherently without order and without any kind of structure.fishfry

    Take a look again. You are proposing a type of unity, a "set", without any structure. By what principle do you say that it is a collection?

    A set is entirely characterized by its elements; but a set is more than just its elements. It's the elements along with the collecting of the objects into a set.fishfry

    What is this act which you call "the collecting of the objects into a set"? Wouldn't such an act necessarily create an order, if only just a temporal order according to which ones are collected first? I'm trying to figure out how you get around the need for the elements to have an order. I mean, it's one thing to assert, "I've got this collection of elements and they have no inherent order" (to which I'd say you're lying), and another thing to demonstrate how you've collected a group of elements into a unified whole, without them having any order.
  • Can it be that some physicists believe in the actual infinite?
    I welcome you to provide a non-circular reason for why "determining a quantity" is (true) counting and why "reciting the natural numbers in ascending order" is not (true) counting.Luke

    I explained this already. Your "ascending order" is based on quantity, therefore your supposed "count" of ascending order means nothing unless it is determining a quantity. This is why "numbers" as objects are assumed, so that when you count up to ten you have counted ten objects, (numbers).

    Without this assumption that the symbol represents a quantity, you have a meaningless order of symbols which cannot be said to be "ascending". But if you allow that the symbol represents a quantity, then you have an ascending order. However, if the symbol does represent a quantity, then there must be objects which are counted, to validate the use of the symbols. Therefore, it is proposed that numbers are the objects which are counted, to validate the fact that the symbol must represent a quantity.

    Therefore your "reciting the natural numbers in ascending order" is nothing but an act of determining a quantity of numbers. And, if numbers are not true objects, as I argue is the case, then this is not a true act of counting at all.

    To determine a quantity is equally to make reference to an ascending order.Luke

    This is not true, as I argued with TIDF earlier in the thread. There are many ways to determine a quantity without referencing an ascending order.
  • Can it be that some physicists believe in the actual infinite?

    In a logical proceeding, it is imperative that the symbol employed maintains the same meaning, to avoid the fallacy of equivocation. If "beating" means something different when used to describe beating eggs, from what it means when used to describe beating drums, and we proceed with a logic process, there could be a fallacious conclusion. For example, after the eggs are beaten, the internal parts are all mixed up into a new order, therefore if I beat the drums the internal parts will become all mixed up into a new order.

    You might argue that “counting” in the sense of reciting the natural numbers in ascending order is not the proper meaning of the word, but why is it not? Why is “counting” in the sense of determining a quantity the only proper meaning of the word? These are both counting.Luke

    I explained this already, I think more than once. It is my opinion that there is no such thing as numbers which serve as a medium between the numeral (symbol) and its meaning, or what it represents. So this sense of "counting", which you describe, or define, as "reciting the natural numbers in ascending order", has a false description, or definition. This false definition would act as an unsound premise.

    When we "count" in that sense, we are making an expression of symbols. As fishfry has explained, there is no inherent order to those symbols. To say that a particular order is "ascending order", is simply to make a reference to quantity. Therefore the meaning of that sense off "counting" is derived from, or based in that other sense, which is determining a quantity. So determining a quantity is the primary, and proper sense. If we remove that reference to quantity then there is no basis for any specific order, and you cannot say that "counting" involves an "ascending order", because "ascending" is not justified.

    What I've been trying to tell fishfry, is that there is better sense of "order" which is not based in quantity, but it is temporal. If we refer to a temporal order, then we need some reason other than quantity to support any proposed order, showing why one symbol ought to be prior in time to another, when we "count" in the sense of expressing an order. This reason for ordering in this manner would provided the alternative name.

Metaphysician Undercover

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