Have you considered dating a plumber? Jon Birger crunched the numbers. Ladies, it’s not you: it’s the ratio! Okay, it could still totally be you, but Birger’s book Date-onomics debunks the 50% divorce rate, tells professional women why New York City is a terrible place to date, and suggests being more open-minded about online dating filters. Shout out to my fellow numbers nerds on this one!