“According to common agreement among philosophers, a zombie is or would be a human being who exhibits perfectly natural, alert, loquacious, vivacious behaviour but is in fact not conscious at all, but rather some sort of automaton. The whole point of the philosopher’s notion of zombie is that you can’t tell a zombie from a natural person by examining external behaviour. Since that is all we ever get to see of our friends and neighbours, some of your best friends may be zombies.” (Consciousness Explained, 73)

So, anyone got any confessions to make?