“Suppose you have a choice between visiting the art museum, including its new wing, or going to see the museum without visiting the new wing. Naturally, you would prefer to see it with the new wing. But now imagine that an evil demon declares that out of every 100 people who see the new wing, he will choose one, at random, and inflict 15 years of blindness on that person. Would you still visit the new wing? You’d have to be nuts.”