I did something totally irrational the other day, something that goes against my principles. I bought two Powerball tickets.

I knew the chances of winning were one in 175,223,510. The odds of becoming a movie star are better. But someone is going to have to win this thing eventually, I reasoned, and it might as well be me.

A few years ago at a gas station, I stood behind a woman who bought instant lottery tickets, and I watched as she scratched off the numbers. I was just about to say to her that winning is a very long shot. Before I got it out, she discovered she had won—a paltry $15. Who knows how much she had spent on lottery tickets before?