Was Hume right about causation? My understanding is that the synthetic a priori conditions of and for possible experience requires prior experience in order to establish just what are the necessary general conditions of and for experience. Once it is established (by experience and the phenomenological examination of experience) just what is essential to all coherent experience (that it be spatial, temporal, causal etc) is a priori in the sense that further actual experiences do not need to be examined in order to know that these conditions will necessarily apply. — Janus
All reason is existentially dependent upon rudimentary thought/belief. All experience is as well. There is no reason completely devoid of experience and/or emotion.
Any such notion is akin to a brain in vat; such notions are based upon logical possibility(coherent use of definition) alone. There are no brains in vats prior to language use for "brains in vats" is a name for a particular kind of thought experiment. That experiment is itself existentially dependent upon thinking about thought/belief. As such, it cannot glean knowledge of that which existed in it's entirety prior to language.
Causality. Meaning. Truth. Thought. Belief.
All of those things existed in their entirety prior to account of them. Any account to the contrary is wrong.
The problem with some logical possibility is that they stand in direct contradiction to the way things actually are. All talk about apriori is bunk. All talk about reason without emotion is bunk.
A priori reason is equivalent to the most delicate of apple pies without apples. It is a brain in a vat. A brain cannot do anything by itself. Sensory stimulation/interaction is necessary in the sense of existential dependency. A brain in a vat cannot think for the same reason that an apple is not enough for an apple pie. A priori reason is itself existentially dependent upon experience. There is no reason absent and/or devoid of experience. Reasoning in the manner set out by Hume and Kant is a kind of experience that requires thinking about thought/belief.
I'm not approaching you in a combative stance, by the way... My approach sucks. The above reflects some of our past discourse. I think we agree much more than we disagree.