The Limits of Consciousness

Alex Castellanos: We have to postulate an intrinsic nature at the level of physics. Do we postulate the one intrinsic nature we know to exist? Or do we postulate some totally unknown and unknowable, unknowable in different kinds of intrinsic nature? That would still leave the question of consciousness to then be explained. And I think all you ever do in science or philosophy is go for the most simple, elegant, unified theory. He says he defends panpsychism on current evidences more likely to be true than false.