I’m a week late to the party, so the following is more or less rhetorical…..
Does this mean that transcendental idealism is in the end unavoidable and there is no realistic alternative to this world-view? — Pez
TI is not a world-view, although it may be said to contain the ground for the development of one. TI is a doctrine, supported by a speculative metaphysical theory concerning the human intellect in general, and as such, has no warrant beyond its own logic for actually being the case.
So saying, even if not a world-view
per se, TI is certainly avoidable by not having any knowledge of it, and, there can be realistic alternatives to it by assuming a different set of initial conditions. Just as in any theory, TI is neither certifiably irrefutable nor unalterable.
On the other hand, TI is unavoidable iff the rational thinking subject….that to which the theory applies….subscribes to its rules. With respect to the thread title, one of the major rules is the source of the legitimacy for attributing to Nature, only that by which its observable relations are comprehensible, and its unobserved relations are nonetheless possibly comprehensible.
Only if comprehension is invariant, that is to say, subsumed under the principles of universality and necessity, and thereby under any legitimate condition, is the attribution to Nature a law. From which follows as a matter of experience alone, we do in fact influence the laws of Nature, insofar as we propose them, even if it is true we cannot influence Nature or the intrinsic relations observable in it.
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The spatiotemporal world we live in is, according to Kant, of our own making. It exists only in our ideas (Vorstellung) and gives us no clue to what these things might be „an sich“ or per se. — Pez
If it is the case the spatialtemporal world resides in our intelligence, insofar as “it is of our own making”, it’s absurd to then suppose we live in it.
If something is of our own making, how is it possible we don’t have a clue about what that something is? If it is something because of us it cannot be nothing to us.
Wouldn’t the fact we don’t have a clue about these things, immediately presuppose them? How is it possible to have or not have clues about things that aren’t there to have or not have clues about? And if things are presupposed, the notion of ideas alone as conditions for having no clue about the existence of things, is categorically false.
If that in which we live exists merely from our ideas of it, why do we have and employ apparatus for the receptivity of various modes of physically real affectations caused by really existent things?
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“….. In the transcendental æsthetic we proved that everything intuited in space and time, all objects of a possible experience, are nothing but phenomena, that is, mere representations; and that these, as presented to us—as extended bodies, or as series of changes—have no self-subsistent existence apart from human thought. This doctrine I call Transcendental Idealism….” (A491/B519, in Kemp Smith,1929)
It is, then, in Kant, representations are that which exists only in human thought, and subsequent peer review iterations have extended mere human thought to ideas. That in which we live, in which we exist as a particular kind of thing amongst all things in general, is necessarily presupposed as existing by its own accord, independent of human intelligence, in order for there to be spatialtemporal phenomena at all.