I'm not sure I'd go as far as to say "correct" in describing a logic.
The question for logic, IMO, is not "How does one move from true premises to true conclusions?" -- I'd say that's a question for epistemology more broadly -- but rather logic is the study of validity. The big difference here from even introductory logic books is that the truth of the premises aren't relevant, which I'm sure you know already -- the moon being made of green cheese and all that.
So we don't care if the premises are true or not. We only care that if they are true, due to the form of inferences, that the conclusion must be true.
So we don't care if the premises are true or not. We only care that if they are true, due to the form of inferences, that the conclusion must be true.
I'm not sure the entailment relationship ends up being any more stable than the LNC or the principle of explosion. Pick your hinge and flip it!
Hegel describes the determinateness of quality as involving both “reality” and “negation.” These are the successors, within determinate being, of being and nothing (WL 5: 118/GW 21:98–99,29–35/111). What Hegel seems to have specifically in mind, in connection with “negation,” is that qualities are organized in what we might call a conceptual space, such that being one particular quality is not being the other qualities that are conceptually related to it. Being the quality, “red,” for example, is not just being a conceptually indeterminate “something or other,” knowable only by direct inspection; rather, it is being something that belongs in the conceptual space of color, and thus it is not being the color,“blue,”the color,“yellow,”and soon. In this way, the identity of the quality, “red,” essentially involves reference to what that quality is not:It essentially involves “negation.”6 Hegel sometimes refers to this dependence of quality on other qualities as “alteration” (WL 5:127/GW 21:106,8–9/118;EL§92,A), but it’s important to remember that in this initial context of quality as such, there is nothing analogous to time(or space) in which literal alteration could take place, so the term should be understood as referring to a relationship of logical dependency rather than to one of temporal sequence or transformation, as such.
Under the heading of “reality,”in contrast to“negation,”Hegel seems to want to capture a thought shared by philosophers such as John Duns Scotus, F. H. Jacobi, and C. S. Peirce, who stress an irreducible brute “this-ness,” or haecceitas, distinct from any relatedness or subsumption, as essential to reality. It seems to them that what a particular determinate being or quality is should just be a fact about it, rather than being a fact about how it relates to innumerable other determinate beings or qualities.7 Hegel’s introduction of “negation” alongside of “reality” makes it clear that “reality” (as something like “this-ness”) is not without problems, but that doesn’t cause him to abandon it. Working its problems out will, in effect, be the motor of the Logic as a whole.
If Hegel were asked: Why should we be concerned about this “reality” of determinate being? Why couldn’t we just accept the notion that all qualities are interdependent, defined by their relations to other qualities, “all the way down,” with no remainder (and that all of them are thereby equally “real” or equally “unreal”)?– his answer would be that if something could be what it is by virtue of itself, rather than solely by virtue of its relations to other things, it would clearly be more real, when taken by itself, than something that depends on its relations to other things to make it what it is. This is not to say that the thing that depends on other things is, in any sense, illusory– the “reality” that we’re talking about here is not contrasted with illusion, but with depending on others to determine what one is. Something that makes itself what it is has greater self-sufficiency than something that doesn’t do this, and this self-sufficiency is likely to be among the things that we think of when we think of “reality.” If it is among the things we think of, this could be because we’re aware that “reality”– like the word that Hegel uses, which is real, “realitat”– is derived from the Latin res, or “thing,” so that it contrasts not only with illusion but with anything that is less independent or self-sufficient than a thing.
Robert Wallace - Hegel's Philosophy of Reality, Freedom, and God
Isn't the 'brute fact' at the end of this one a necessary being or a circularity
Yes. If they weren't, then all forms of naturalism would be false.
Well, in a comparison of ontologies I suppose it might be considered question begging. Or on the question of "how might physicalism best be reconceived or reformed," it also seems to include problematic presuppositions.Of course. But What's wrong with that?
What makes you think that? I'm referring to David Armstrong's ontology- which accounts for everything that (unarguaby) objectively exists.
Please elaborate. I don't see how any sort of dualism fits into physicalism.
I perceive as a phenomenal experience a red object, and believe that there is some unknown thing the other side of my senses that has caused this phenomenal experience. For convenience, I call this unknown thing a red object.
I agree that information flows across these boundaries, but would add that the carrier of the information changes across such boundaries, meaning that there is a dividing line.
Yes, we cannot think about "being" without thoughts, but we can also think about "being" existing outside the mind. Otherwise we come to the conclusion that the Universe didn't begin 13 billion years ago, but only began 200,000 years ago when humans developed language.
The daemons are 'between' us and the gods not only locally and materially but qualitatively as well. Like the impassible gods, they are immortal: like mortal men, they are passible (xiii). Some of them, before they became daemons, lived in terrestrial bodies; were in fact men. That is why Pompey saw Semidei Manes, demigod-ghosts, in the airy region. But this is not true of all daemons. Some, such as Sleep and Love, were never human. From this class an individual daemon (or genius, the standard Latin translation of daemon) is allotted to each human being as his ' witness and guardian' through life (xvi).It would detain us too long here to trace the steps whereby a man's genius, from being an invisible, personal, and external attendant, became his true self, and then his cast of mind, and finally (among the Romantics) his literary or artistic gifts. To understand this process fully would be to grasp that great movement of internalisation, and that consequent aggrandisement of man and desiccation of the outer universe, in which the psychological history of the West has so largely consisted.
"Science ONLY deals with description and not with explanation."
Knowledge of the fact (quia demonstration) differs from knowledge of the reasoned fact (propter quid demonstrations). [...] You might prove as follows that the planets are near because they do not twinkle: let C be the planets, B not twinkling, A proximity. Then B is predicable of C; for the planets do not twinkle. But A is also predicable of B, since that which does not twinkle is near--we must take this truth as having been reached by induction or sense-perception. Therefore A is a necessary predicate of C; so that we have demonstrated that the planets are near. This syllogism, then, proves not the reasoned fact (propter quid) but only the fact (quia); since they are not near because they do not twinkle, but, because they are near, do not twinkle.
The major and middle of the proof, however, may be reversed, and then the demonstration will be of the reasoned fact (propter quid). Thus: let C be the planets, B proximity, A not twinkling. Then B is an attribute of C, and A-not twinkling-of B. Consequently A is predicable of C, and the syllogism proves the reasoned fact (propter quid), since its middle term is the proximate cause.
From Aristotle's Posterior Analytics I.13:
I answer that it must be said that demonstration is twofold: One which is through the cause, and is called demonstration "propter quid" [lit., 'on account of which'] and this is [to argue] from what is prior simply speaking (simpliciter). The other is through the effect, and is called a demonstration "quia" [lit., 'that']; this is [to argue] from what is prior relatively only to us (quoad nos). When an effect is better known to us than its cause, from the effect we proceed to the knowledge of the cause. And from every effect the existence of its proper cause can be demonstrated, so long as its effects are better known to us (quoad nos); because since every effect depends upon its cause, if the effect exists, the cause must pre-exist.
From St. Thomas' Summa theologiae I.2.2c:
Consciousness, like memories, is not a thing. It is a status that happens when our neurons get stimulated repeatedly. Our individual, unique memories, which we fondly call subjective are made possible by synapses.
The million pulses that have to happen in order to retrieve an image of an apple or a tree is not magic.
Are laws of nature natural? They’re never actually observed, only their effects can be discerned by measurement and observation. But the question why nature is lawful or what natural laws comprise, is not itself a question that naturalism has answers for. Naturalism assumes an order in nature, but it doesn’t explain it, nor does it need to explain it. That, I suppose, is what you’re getting at by saying that the existence of the world is ‘brute fact’ - which effectively forecloses any attempt to understand why things are the way they are, whether they are as they seem, and so on.
Yep. I had in mind that for those who argue that "all is consciousness" this is amounts to a brute fact -
Intelligibility and quiddity strikes me as related to theories of mind and of truth. Something is "intelligible" if it is understood (i.e. it is describable by propositions that are known). Quiddity seems a subset of intelligibility. A complete metaphysical theory (whether physicalist or anything else) is a description of the way things actually are objectively (not merely what we perceive), albeit that we learn about the world phenomenologically.
I know that I perceive the colour red and feel pain.
I believe that neither the colour red nor pain exist in the world.
I believe that sometimes my perceptions of red and pain have been caused by something this side of my senses, such as dreams and headaches, and sometimes have been caused by something the other side of my senses, such as the wavelength of 700nm or a thistle.
As I don't believe that pain exists in the thistle, I don't believe that the colour red exists in the wavelength of 700nm.
Do you believe that the colour red and pain exist in a world outside a mind?
The question is, how is it logically possible to overcome the dualism between thought and being when life only knows about being through thought?
turing complete
Indirect Realism, aka Representationalism, holds the position that any world the other side of the senses is fully real. This is why it is called "Realism". However, what we perceive is only a representation of what exists in any world.
The properties we perceive are representations of the properties that exist in the world.
This doesn't mean that the properties in the world as less real, because if they were, we wouldn't have had any perceptions in the first place.
The mind perceives fully real properties, believed to have been caused by fully real properties in the world, which may or may not be the same as what we perceive.
I perceive the colour red even though I believe that the colour red doesn't exist in the world. I perceive pain even though I believe that pain doesn't exist in the world. I perceive numbers even though I believe that numbers don't exist in the world.
They’re not real ‘from their own side’ is one of the ways it is expressed. That is quite different to the Platonist take on it but that’s enough for one post.
Justice . . . is concerned with what is truly himself and his own. . . . [The person who is just] binds together [his] parts . . . and from having been many things he becomes entirely one, moderate, and harmonious. Only then does he act. (Republic 443d-e)
Our interest here (I’ll discuss the “justice” issue later) is that by “binding together his parts” and “becoming entirely one,” this person is “truly himself.” That is, as I put it in earlier chapters, a person who is governed by his rational part is real not merely as a collection of various ingredients or “parts,” but as himself. A person who acts purely out of appetite, without any examination of whether that appetite is for something that will actually be “good,” is enacting his appetite, rather than anything that can appropriately be called “himself.” Likewise for a person who acts purely out of anger, without examining whether the anger is justified by what’s genuinely good. Whereas a person who thinks about these issues before acting “becomes entirely one” and acts, therefore, in a way that expresses something that can appropriately be called “himself.”
In this way, rational self-governance brings into being an additional kind of reality, which we might describe as more fully real than what was there before, because it integrates those parts in a way that the parts themselves are not integrated. A person who acts “as one,” is more real as himself than a person who merely enacts some part or parts of himself. He is present and functioning as himself, rather than just as a collection of ingredients or inputs.
We all from time to time experience periods of distraction, absence of mind, or depression, in which we aren’t fully present as ourselves. Considering these periods from a vantage point at which we are fully present and functioning as ourselves, we can see what Plato means by saying that some non-illusory things are more real than other non-illusory things. There are times when we ourselves are more real as ourselves than we are at other times.
Indeed, we can see nature as a whole as illustrating this issue of how fully integrated and “real as itself ” a being can be. Plants are more integrated than rocks, in that they’re able to process nutrients and reproduce themselves, and thus they’re less at the mercy of their environment. So we could say that plants are more effectively focused on being themselves than rocks are, and in that sense they’re more real as themselves. Rocks may be less vulnerable than plants are, but what’s the use of invulnerability if what’s invulnerable isn’t you?
Animals, in turn, are more integrated than plants are, in that animals’ senses allow them to learn about their environment and navigate through it in ways that plants can’t. So animals are still more effectively focused on being themselves than plants are, and thus more real as themselves.
Humans, in turn, can be more effectively focused on being themselves than many animals are, insofar as humans can determine for themselves what’s good, rather than having this be determined for them by their genetic heritage and their environment. Nutrition and reproduction, motility and sensation, and a thinking pursuit of the Good each bring into being a more intensive reality as oneself than is present without them.
Philosophical Mysticism in Plato, Hegel, and the Present - Robert M. Wallace
My belief is in Enactivism, in that life has evolved for about 3 billion years through a dynamic interaction between an organism and its environment.
In other words, the "mind-independent word" is not the name of an unknown thing, but rather is the name for an unknown cause of known sensory experiences.
On page 233 Sokolowski writes about the "categorial, syntactic activity, along with the intellection that accompanies it," that comes with our "neural lens." It seems to me like this facet of "the internal structure of our sensibility" is useful for elucidating how we can have intelligibilities and essences "present to us."
One of the claims that is often made by the representationalist position that Sokolowski critiques is that many of the properties of objects that we are aware of do not exist "in-themselves," and are thus less than fully real. For example: "nothing looks blue 'of-itself, things only look blue to a subject who sees." If the property of "being blue," or of "being recognizably a door" does not exist mind-independently, they argue, such properties must in some way be "constructed by the mind," and thus are less real.
What I'd like to point out is that this sort of relationality seems to be true for all properties. For example, we would tend to say that "being water soluble" is a property of table salt. However, table salt only ever dissolves in water when it is placed in water (in the same way that lemon peels only "taste bitter" when in someone's mouth). The property has to be described as a relation, a two-placed predicate, something like - dissolves(water, salt).
I think there is a good argument to be made that all properties are relational in this way, at least all the properties that we can ever know about. For how could we ever learn about a property that doesn't involve interaction?
So, "appearing blue" is a certain sort of relationship that involves an object, a person, and the environment. However, this in no way makes it a sort of "less real" relation. Salt's dissolving in water involves the same sort of relationality. The environment is always involved too. If it is cold enough, salt will not dissolve in water because water forms its own crystal at cold enough temperatures. Likewise, no physical process results in anything "looking blue" in a dark room, or in a room filled with an anesthetic that would render any observer unconscious.
Intelligibilities require syntax. They result from bringing many relations together in such a way that they can be "present" at once. They are a very special sort of relationship. This isn't just because they involve phenomenal awareness. "Looking blue" or "tasting bitter" is a relationship between some object and an observer, but these do not "actualize" an intelligibility. What an intelligibility does is it allows many of an object's relational properties to be present together, often in ways that are not possible otherwise.
For example, salt can dissolve in water. It can also do many other things as it interacts with other chemicals/environments. However, it cannot do all of these at once. Only within the lens of the rational agent are all these properties brought together. E.g., water can boil and it can freeze, but it can't do both simultaneously. Yet in the mind of the chemist, water's properties in myriad contexts can be brought together.
In a certain way then, things are most what they are when their intelligibility is grasped by a rational agent. For, over any given interval, a thing will only tend to manifest a small number of its properties — properties which make the thing "what it is." E.g., a given salt crystal over a given interval only interacts with one environment; all of its relational properties are not actualized. Yet in the mind of the rational agent who knows a thing well, a vast number of relational properties are brought together. If a thing "is what it does," then it is in the knowing mind that "what it does" is most fully actualized. And this is accomplished through syntax, which allows disparate relations to be combined, divided, and concatenated across time and space.
So, rather than the relationship between knower and known being a sort of "less real" relationship, I would argue it is the most real relationship because it is a relationship where all of a things disparate properties given different environments can be brough together.
For me, the problem about objects existing in a world independent of any observer, is, what mechanism is there in such a world independent of any observer that relates atom A to atom B but doesn't relate atom A to atom C?
Indeed, any logician will be aware that there are various logical systems.
But for there to be a pair of apples, this presupposes a prior relation between the individual apples.
Physicalism is the conviction that empirical phenomenon are determined(not necessarily deterministically) by physical laws (what that means is not clear, granted). This may not be the case.
I really do like DBH but then I also get the sense he's mainly preaching to the choir a lot of the time
The fact your cat can't be simultaneously be in Maryland and Paris is because you have chosen to define "Maryland" and "Paris" in ways that are mutually exclusive and so one is not the other.
But there is no need to do this for any physical things, whether in the trivial senses we talk about all the time or in more fundamental ways; for instance, some quantum interpretations will ascribe an ontological realism to the idea that a thing can be in two places at once in the sense suggested by traditional conceptions of quantum superposition.
Which is not surprising, as the Logic Of All And Only Universal Principles would need to have its laws apply in complete generality, and thus talk about every other logical apparatus in existence.
Logical Monism holds that there is only one correct or true logic, meaning that a single set of logical rules or principles governs valid reasoning universally. Proponents believe that this one logic captures the essence of valid inference across all contexts. [Note, books making the case for monism I have seen generally focus on applied logic as the target for their argument. The analogy here would be the difference between trying to identify the physical geometry of the world versus the purely mathematical consideration of very many geometries.]
Logical Pluralism asserts that more than one logic can be correct, depending on the context or purpose. Different logical systems may be valid for different kinds of reasoning (e.g., classical logic for everyday reasoning, but other logics like intuitionistic or relevance logic in specialized cases). [The most common historical example here I can think of is the claim, arguably in Aristotle, that the Law of the Excluded Middle does not apply to statements about the future].
Logical Nihilism denies that there is any objective or true logic at all. It suggests that no logical system accurately captures reasoning or inference, and that the concept of "correct" logic may be meaningless or arbitrary. [Or, one way to put this more specifically, as Russell points out in a footnote, is idea that the logical consequence relationship in natural language (and so arguably scientific discourse as well) is actually empty. Of course, the nihilist may also recommended other ways to retrieve the concept of a "correct logic" as well.]
If you understood the essential properties and context of what grue and bleen is, then yes
the case of grue and blue, we're not asking what the definitions should be, we already know what they mean. Our decision is then, "should we use grue or blue"? And I mentioned earlier, as long as both are accurate to the point they are not contradicted by reality, its really a personal choice. It may be as simple as, "I like one word more than another" or as complicated as, "Those dirty grueians are a stupid people that I find inferior. Blue is obviously superior and the 'right' way to identify a color."
One might push back on Aristotle's categories sure, but science certainly uses categories. The exact categories are less important than the derived insights about the organization of the sciences. And the organization of the sciences follows Artistotle's prescription that delineations should be based on per se predication (intrinsic) as opposed to per accidens down to this day.
This is why we have chemistry as the study of all chemicals, regardless of time, place, etc. and biology as the study of all living things as opposed to, say: "the study of life on the island of Jamaica on Tuesdays," and "the study of chemical reactions inside the bodies of cats or inside quartz crystals, occuring between the hours of 6:00am and 11:00pm," as distinct fields of inquiry. Certain sorts of predication (certain categories) are not useful for dividing the sciences or organizing investigations of phenomena (but note that all are equally empirical).
Of course, there have been challenges to this. The Nazis had "Jewish physics" versus "Aryan physics." The Soviets had "capitalist genetics" and "socialist genetics," for a time. There are occasionally appeals to feminist forms of various sciences. But I think the concept that the ethnicity, race, sex, etc. of the scientist, or the place and time of the investigation, is (generally) accidental to the thing studied and thus not a good way to organize the sciences remains an extremely strong one.
That said, if all categories are entirely arbitrary, the result of infinitely malleable social conventions, without relation to being, then what is the case against organizing a "socialist feminist biology," "astronomy for leap years," and a "biology for winter months," etc ?
They certainly wouldn't be as useful, but that simply leads to the question "why aren't they useful?" I can't think of a simpler answer than that some predicates are accidental and thus poor ways to organize inquiry. We could ground this in the structure of things but it seems it might be simpler to ground it in phenomenology and the quiddity (whatness) of things as experienced. We can think here if how Husserl imagines changes to the noema (object of thought) and considers which changes force it to become an entirely different sort of thing.
Maybe "it just is"? But isn't that super-convenient for us?
To put it in simple terms (borrowed from Sider), are we really not in a position to say that the Bleen people have gotten something wrong?
If two things are equivalent, A<->B, does that mean they represent the same math object?
Mathematics thrives on going to extremes whenever it can. Since the “compromise” we sketched above has “mathematical objects determined by the network of relationships they enjoy with all the other objects of their species,” perhaps we can go to extremes within this compromise, by taking the following further step. Subjugate the role of the mathematical object to the role of its network of relationships—or, a
further extreme—simply replace the mathematical object by this network. This may seem like an impossible balancing act. But one of the elegant–and
surprising—accomplishments of category theory is that it performs this act, and does it with ease.
I also have ulterior reasons for taking dialetheism seriously, namely Marx and Hegel. Marx's notion of contradiction I have a good feel for (but because it's more extensional it's easier to untangle Marx's notion of contradiction from the logical one by dividing wholes into parts that differ), but Hegel's continues to mystify me.

And how will you enquire, Socrates, into that which you do not know? What will you put forth as the subject of enquiry? And if you find what you want, how will you ever know that this is the thing which you did not know? (Plato, Meno, 80d1-4)
