Apparent order is not perceived? Do you know what "apparent" means? — Luke
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
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
If there is a difference between the apparent order and the inherent order, then why did you state: — Luke
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
Are these both the inherent order (bolded)? If so, then why do you say "along with the order"? — Luke
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
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
But now you say that Kant's phenomena-noumena distinction is not the basis for your argument. — Luke
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
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
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
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
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
What strawman interpretation? Instead of empty accusations, go ahead and explain how or what I have misinterpreted. — Luke
Pure contradiction. — Luke
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
Where does Kant say this? — Luke
Also, do you have any intention of accounting for your latest blatant contradiction: — Luke
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
How is intention phenomenal (in the relevant Kantian sense)? — Luke
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
So there you are, still demanding that order must be temporal-spatial. — TonesInDeepFreeze
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
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
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
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
This started with discussion of the axiom of extensionality. With that axiom, sets are equal if they have the same members. — TonesInDeepFreeze
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 made no argument for a philosophy regarding truth. — TonesInDeepFreeze
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
If order is not restricted to "temporal/spatial", then order is not restricted to unknowable noumena. — Luke
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
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
(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
Before, it was temporal/spatial. — TonesInDeepFreeze
Now, please tell me "THE inherent order" of them. — TonesInDeepFreeze
So any predicate that involves "relations with others" is an order? — TonesInDeepFreeze
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 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
In other words, how could the inherent order be known? If it cannot be known then how do you know there is one? — Luke
I haven't argued a philosophy. — TonesInDeepFreeze
empirical validation isn't relevant. — Wayfarer
It is the unique object whose members are all and only those specified by the set's definition. — TonesInDeepFreeze
What is that "inherent order"? On what basis would you say one of these is the "inherent" order but not the others?: — TonesInDeepFreeze
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
'is prime' is a predicate, not an ordering. — TonesInDeepFreeze
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
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
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 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
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
Clearly there is more than one point in math. — fishfry
Tell me what the order is so that I may know. — fishfry
Which are the first, second, and third vertices of an equilateral triangle? — fishfry
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
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
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
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
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
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
I just gave you a nice example, but I'm sure you'll argue. — fishfry
Vertices of a triangle. Inherently without order. — fishfry
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
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
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
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
You're wrong. — fishfry
You have corrected me and I stand corrected. — fishfry
The set of all primes between one and twenty-one has no order dependent upon its definition. — jgill
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
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
Thanks. I have learned from this thread to avoid discussion of this topic in future. — Wayfarer
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
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
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
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
You claimed that the diagram has an inherent order. Specify that order. — Luke
Specify that order. Which dots are the start and end points of that order? — Luke
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
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
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
But why can't I have two conceptual, abstract spheres? — fishfry
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
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
If not specified, then at least strongly implied in the same post: — Luke
You wrote 'Russel' twice. It's 'Russell'. — TonesInDeepFreeze
Tracking recent points Metaphysician Undercover has either evaded or failed to recognize that he was mistaken. — TonesInDeepFreeze
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
So we start with the unordered set {a,b,c}. — fishfry
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
A set has no inherent order. That's the axiom of extensionality. — fishfry
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
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
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
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
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
You ignore what I said. That is your favorite argument tactic: — TonesInDeepFreeze
What is "THE INHERENT" order you claim that the dots have? — TonesInDeepFreeze
Start with what people say in everyday language. — TonesInDeepFreeze
Sets of cardinality greater than 1 have more than one ordering. — TonesInDeepFreeze
Nobody is claiming math is absolute truth but you. — fishfry
Don't you think he was recognizing and responding to exactly the point you are making? — fishfry
Try understanding the axiom of extensionality. — fishfry
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
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
But math makes no claims as to the truth of "this." — fishfry
A contradiction is a statement and its negation. — TonesInDeepFreeze
This was in reference to my question, Why don't you treat math like chess, and accept it on its own terms? — fishfry
Then your complaint is with the physicists, engineers, and others; and not the mathematicians, who frankly are harmless. — fishfry
Again, your complaint is with those mis-applying math or applying math to bad ends. — fishfry
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
I can't argue with the fantasies in your head. Set theory is what it is. — fishfry
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
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
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
That's a picture of dots in a disk. It's not an ordering. — TonesInDeepFreeze
. That means for you to state which dots come before other dots, for each dot. — TonesInDeepFreeze
The symbols do represent how many individuals there are. What do you mean by “directly”? — Luke
Do you recognize that the word 'tree' is not a tree? — TonesInDeepFreeze
But you fail to recognize that the word 'two' or the symbol '2' are not the number 2. — TonesInDeepFreeze
The number does not represent how many individuals there are.
The number is how many individuals there are. — Luke
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
But "1" or "2" are the number of individuals, not the individuals. — Luke
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
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
You were presented with points in a plane, without being given a stated particular ordering. — TonesInDeepFreeze
One could just as well say 'unstated'. — TonesInDeepFreeze
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
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
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
Meanwhile, you're not even familiar with the distinction between semantics and syntax and the notion of model theoretic truth. — TonesInDeepFreeze
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
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. 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
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
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
You don't want to read the Wiki piece on order theory. — fishfry
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
You could see the quantity of objects but not the number of objects? — Luke
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
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
It's like saying that learning to play a musical instrument is tremendously difficult at first so people should just give up. — fishfry
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
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
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
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
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
Is it possible for an axiom to be false? Please explain. Don't refer to inconsistency. :roll: — jgill
Which axioms of finite set theory do you think are false? — TonesInDeepFreeze
I think you are just not cut out for mathematical abstraction and should pick another major. — fishfry
Enough. You win. You wore me out. — fishfry
Pick another major. — fishfry
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
We prove from axioms. — TonesInDeepFreeze
You also told us that you assume numbers are objects. — Luke
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
You assume that numbers are objects but argue that numbers are not objects? Sounds about right given your confusion. — Luke
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
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
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
A set is a collection of elements, regarded as an individual thing, a set. — fishfry
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
A set is inherently without order and without any kind of structure. — fishfry
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
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
To determine a quantity is equally to make reference to an ascending order. — Luke
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
