From the earliest times, people have used lotteries to make decisions--by drawing straws, tossing coins, picking names out of hats, and so on. We use lotteries to place citizens on juries, draft men into armies, assign students to schools, and even on very rare occasions, select lifeboat survivors to be eaten. Lotteries make a great deal of sense in all of these cases, and yet there is something absurd about them. Largely, this is because lottery-based decisions are not based upon reasons. In fact, lotteries actively prevent reason from playing a role in decision making at all.

Over the...