The reason I’m focusing on this is that I think some of the phrasings you chose in trying to summarize Kant (and translate or steelman his views) are sliding between the three different claims I described above:
[1] “We can’t know things about ultimate reality without relying on initially unjustified knowledge/priors/cognitive machinery.”
[2] “We can’t know things about ultimate reality.”
[3] “(We can know that) ultimate reality is wildly different from reality-as-we-conceive-of-it.”
With regard to Kant’s claims, there is no “sliding” because he asserts all 3 of those, and provides separate arguments for them. In particular, [3] is supported by the Antinomies, which purport to show that spatiality is not a property of objective reality. He is not deriving everything from a single argument, any other than Berkeley is.
With regard to Kant’s claims, there is no “sliding” because he asserts all 3 of those, and provides separate arguments for them. In particular, [3] is supported by the Antinomies, which purport to show that spatiality is not a property of objective reality. He is not deriving everything from a single argument, any other than Berkeley is.