From Flak, an article on Christopher Hitchens as the dismemberment man. There's a men's route and a women's route: Research tries to explain why the sexes choose different strategies to get from A to B. We live in a world where "flip-floppers" are treated with contempt; a survey of top thinkers serves as a reminder of how healthy it is to change one's mind. The Argentine writer Jorge Luis Borges might seem an unlikely candidate for Man Who Discovered the Internet. Among the Spires: Between medieval and modern, Oxford seeks equilibrium. Young adults only: Sex! Drugs! Study Hall! Radar helps you choose the racy teen novel that's right for you. Fashionomics: A look at why fashion should be taken seriously. When the giving is good: Harvey Mansfield on saving Christmas from the economists.