My extended family has a tradition. Each year, when we gather for Christmas, we play a family poker game. That’s really the only time I ever play poker, and I always lose all my money. In short, I’m a terrible player. I’m sure I could improve if I studied the probabilities more deeply, but to do that, I’d have to invest more emotional energy in the game, which I don’t really want to do. I like to play once a year, spend some quality time with my family, and see....