"People say, “I’m going to sleep now,” as if it were nothing. But it’s really a bizarre activity...."

“People say, “I’m going to sleep now,” as if it were nothing. But it’s really a bizarre activity. “For the next several hours, while the sun is gone, I’m going to become unconscious, temporarily losing command over everything I know and understand. When the sun returns, I will resume my life.” If you didn’t know what sleep was, and you had only seen it in a science fiction movie, you would think it was weird and tell all your friends about the movie you’d seen. “They had these people, you kno...