"If I told you that I had a neurological disease which meant that for eight or more hours a day I lost control of my faculties, bade farewell to the outside world, and was subject to complex hallucinations and delusions . . . you would think I was in a pretty bad way. If I also claimed that the condition was infectious, you would wish me luck in coping with such a terrible disease, and bid me a hasty farewell."But hold on! We are talking about sleep. Everybody does it. Everybody agrees it has biological purpose but nobody knows what the purpose is.
