Is a brain necessary for experience? Do we have any good reason to limit the attribution of experience to creatures with complex nervous systems? Actually, no. Some materialists claim that consciousness can only exist in brains–sound reasoning, neuroscience, and physics all point in the same direction. We take a closer look at the reasoning that underlies the claim that complex nervous systems are necessary for experience.
A quick note on terminology: In this episode, I use physicalism and materialism interchangeably. And by “consciousness,” I’m referring to subjective experience: the what-it’s-like of consciousness. I try to stick to “experience” for clarity, but when I say “consciousness,” or “mind,” unless otherwise specified, experience is what I mean.