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I just saw someone on reddit say that the laws of logic and mathematical truths are physical because they are in the brain and the brain is physical. He was serious.
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There is a bit of naturalized mysticism going on in that thought: nature grows knowers so that it can know itself; nature is a logico-mathematical order, the brain grows out of it, and thus the brain operates logically. I get the sense that there's a covert panpycism buried in the idea.