Last night Robert H. Frank, the author of 'The Economic Naturalist' and a professor of Economics from Cornell University, spoke at the University Bookstore about his new book 'The Economic Naturalist: In Search of Explanations for Everyday Enigmas. You may, if you are widely-blog-read, recognize his name from recent excerpts posted to the Freakonomics blog. The Economic Naturalist purports to examine the world's quandries using economic principles by analogy to field biology. The challenge is......