AJ Hartley: "why books are better than movies." I'm not sure that's always true -- surely some films surpass their source material, but I'm hard pressed to think of an example off the top of my head.Erik Voeten asks an incisive question: "Is the Marginal Cost of Drone Strikes Too Low?"Brad DeLong argues that, despite temporary fixes, the Eurocrisis remains very real.Spencer Ackerman reports on the apparent failure of the Afghanistan surge. More...