Zombies look like you and me, and indeed, from our vantage point they are indistinguishable from human persons. But there is one, very important difference: Zombies lack “consciousness.” Zombie neurons fire just like ours. Zombies laugh at jokes, go to work, write screenplays (unless they are on strike), get into fights, have sex, and go to Milk and Honey for drinks. Just like us. But zombies do not have a conscious experience of finding jokes funny.