Imagine your whole day lived backward, from beginning to end. When you got up, you'd put on your jacket, then your shirt and pants, and over those your underwear, because after all, backward is backward, and on a backward day backward is the way everything has to be. You'd walk downstairs backward and sit on your chair backward with your back to the table, and when your parents greeted you in the morning you'd say, of course, "Good night." But how...