Not everything can be discovered. … The following quote is taken from a web site devoted to the philosophy of C.S. Lewis. It argues that the mind must be immaterial.
Theorizing guys versus practical guys.
There are practical guys learning about the brain in behavioral psychology (animals as well as us), neuroscience, biochemistry and medicine, doing basic research, trying to find cures, creating devices to overcome disabilities and so on.
Very few of these guys are currently trying to explain the mind, that’s too hard at the moment and not what they’re paid for, although a few of them speculate about how they think it might work. But all the time they’re gaining knowledge, filling-in the unknowns, explaining more and more.
Lewis and Haldane can theorize all they want but the practical guys ignore them. They already know that cause and effect can be darned subtle, e.g. as in chaos, and are wary of simplistic theories. In any event practical guys don’t just accept theories, they test them.
Some of this work is taught in schools, it’s about us and intrinsically interesting, and kids are predisposed to accept explanations that work. Whether we like it or not a material explanation of mind is coming.