Philosophers’ zombies, in contrast, can be delightful company, the life of the party, as loving and joyous and spontaneous as anybody you know. Some of your best friends might be zombies. Philosophers’ zombies are (by definition) behaviorally indistinguishable from normal conscious human beings, but “there’s nobody home”—they entirely lack any inner life, any conscious experience. They just appear from the outside to be conscious. If you agree with these philosophers that this is a serious issue, if you wonder—given the logical possibility of philosophers’ zombies—how there could ever be a scientific, materialistic theory of consciousness, then you are gripped by the Zombic Hunch.
Source:
Philosopher Daniel Dennett’s Book Intuition Pumps
