Junior high school is a difficult time for parents as well as students. It's a time when boys start to discover girls, and girls start to discover boys. (Reports differ on exactly which group discovers the other first, but it's equally terrifying for most parents.) One of the very first things junior high boys and girls start doing when they discover each other is rating each other — usually on a scale of 1-10. The 9s and 10s form cliques to congratulate each other on their good fortune, while the 3s and 4s learn to tell jokes, plan on making money, or learn to get by with a "great personality." (In case you've forgotten, junior high school can be really cruel.)
It turns out, though, that junior high kids aren't the only ones rating the world around them. Now comes news that two German economics professors