That's true, but as mentioned above, the explanations humans give of how they reached their conclusions are parallel construction rather than genuine introspection. We really don't understand how our brains work, either when they're generating their conclusions or when they're generating an explanation for those conclusions.

Yes, I'm (somewhat) aware of the research. I'm unaware of any legal jurisdiction that recognizes it, let alone tries to address it somehow.

There's reality, there's legal reality, and then there's what legal reality does to reality.