Self-driving cars perform tasks that would require human intelligence, while chess-playing computers perform tasks that would require consciousness in humans.

“This could be a zombie like this, and, uh, I think zombies are possible. Uh, clearly you can build self-driving cars that do things that would require intelligence of human beings, or you can play, uh, chess-playing computers that can do things that require intel-- uh, consciousness in human beings.”