Whenever I get a free day I like to read something far removed from whatever it is I'm studying. Today really shouldn't have been a free day, but it was, and I spent a good chunk of it reading Freakonomics, which you probably heard about in connection with its claim that the legalization of abortion in the '70s lowered crime rates in the '90s. But the book makes many other factual claims, and it's a good read, the sort of book that makes you think that all problems should be solved by people with PhDs in economics. The best section is about the KKK, centered around Stetson Kennedy's successful use of the Superman radio show to humiliate the organization by publicizing its childish rituals and absurd codewords nationwide.