Watching the Broadway musical Great Gatsby. It’s striking that the proportion of girls parading in dresses significantly exceeds the proportion of guys escorting girls. It made me wonder why. The explanation seems simple. If a girl wants to go to a musical and she doesn’t have a boyfriend, she will bring at least one girl, better yet two. Whereas a guy is more likely not to go at all than to show up with a buddy. Well, with certain exceptions.

