How does Kant justify that transcendental deduction is possible? — RussellA
The possibility is given by showing how an empirical deduction doesn’t work. The justification is given by the demonstration of their place and purpose in a method, and that they are in no way self-contradictory.
In logic generally, deduction is top-down, re: from the general to the particular. Transcendental logic, then, is nothing but the kind of deduction it is, or, which is the same thing, nothing but the conditions under which the deduction is accomplished.
Transcendental, in Kantian philosophy, is that by which pure
a priori is the determining condition.
Also in Kantian philosophy,
a priori is meant to indicate the absence of any and all empirical conditions, hence, the denomination “pure”.
A deduction in Kantian philosophy follows the general rule of logic, in which a minor premise is subsumed under a major, for which a conclusion exhibits the relation of them to each other.
From all that, it follows that a transcendental deduction, first, must be purely
a priori therefore can have no empirical predication whatsoever, insofar as it is transcendental, and second, it must exhibit reduction from the general to the particular, insofar as it is that certain type of logical operation.
Now, with respect to a transcendental deduction of the categories, which is in fact the title of a subsection dedicated to just that, this kind of argument cannot have to do with representations of objects, because, being purely
a priori, there are no phenomena hence no representations of objects, but still must be a reduction from the general to the particular in order to qualify as a deduction. It follows that without representations of objects, but requiring the general as a major premise, it must be a conception relating to the representation of any object, or, which is the same thing all objects.
So, first, that which makes cognition of all objects possible, is the “diversity in pure intuition”, which serves as the major in a deductive syllogism. But the major subsumes under itself the minor, which is said to be the synthesis of the diversity, which has already been termed the synthesis of matter of objects to their form, from which arise phenomena, a conception which represents all objects in general, or, which is the same thing, phenomena are that which are subsumed under the diversity in pure intuitions
a priori.
All that being the case, with respect to the pure conceptions of the understanding, re: the categories, it is quite clear there is no experience, and no examination of the nature of experience, insofar as experience, being defined as….
“…. an empirical cognition; that is to say, a
cognition which determines an object by means of perceptions. It is therefore a synthesis of perceptions, a synthesis which is not itself contained in perception, but which contains the synthetical unity of the manifold of perception.…”
…..and given only a diversity in general, and a synthesis of it, there is as yet no determination of a particular object, hence
no cognition of an object at all, and by which experience is impossible, which immediately removes experience from any consideration regarding the origin and purpose of the categories.
“….. The first thing which must be given to us for the sake of the à priori cognition of all objects, is the diversity of the pure intuition; the synthesis of this diversity by means of the imagination is the second; but this gives, as yet, no cognition. The conceptions which give unity to this pure synthesis, and which consist solely in the representation of this necessary synthetical unity, furnish the third requisite for the cognition of an object, and these conceptions are given by the understanding….”
(A79/B104)
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Now…..why is this the case. Hmmmm, let’s find out, shall we?
1.) If Kant deduces the categories in accordance with logical syllogisms having empirical content, he loses the capacity to enounce the conditions for pure thought of
possible objects. All cognitions must be of appearances alone, and no object that is not an appearance can ever be thought;
2.) It is in this way that noumena are impossible for this kind of intelligence, in that, while noumena are indeed objects of pure thought, they are not and cannot be appearances to which alone the categories apply, and therefore by which noumena are termed “the limitation on sensibility”;
3.) There is no transcendental conditions that are
determinable by sensibility. All conceptions as representation, whether empirical or
a priori, belong to understanding alone, but confining the categories, which are pure conceptions
a prior only, having no representation belonging to them**, and the expositions related to them, to understanding and reason respectively, Kant removes the possibility of cognizing objects from the mere affect they have on the senses. In so doing, he justifies the
ding an sich as that which is real but for which experience is impossible, along with noumena which isn’t even real, insofar as they are never to meet the criteria of being phenomena.
(**the schema of the categories are not representations; they are merely conceptions subsumed under and modifying the conception of the category itself of which they are members)
4.) If Kant deduces the categories in strict accordance with logical method, even
a priori, he must limit himself to form only, pure logic being devoid of content by definition. Any conception devoid of content is empty, any empty conception cannot be ground for determining the cognition of objects. If this is the case, the third requisite remains missing, and the transcendental predication falls apart. But it doesn’t, in that there is the cognition of objects, and because that is the case the methodology stands, the third requisite must be present. All that’s left, having already denied innateness given by mere birth, and failing the non-contradiction of a pure deduction on transcendental ground, Kant’s position is simply to grant the validity of the categories as “given by the understanding”, which he then calls the exposition of the possession of them, rather than the syllogistic conclusion making them absolutely true.
5.) In which is found the subtelty behind the mention, “ so long as we are careful in the construction of our fictions, which are no less fictions on that account…”
6.) A transcendental deduction can never follow from an observation, by definition. B276 is rife with pure
a priori conceptions, hardly to be amendable to empirical conditions. “My existence in time” is a presupposition, not an observation.
Bet none of that is in your secondary literature!!!!!!
WOOHOO!!!