This is an interview of Jon Hanson, director of Project on Law and Mind Sciences at Harvard Law School and cofounder of the Situationist blog. Once upon a time Hanson was a law & economics guy, whose analysis was based on the rational actor model. But based on his experience before studying law, he already had his doubts, because he'd seen how doctors facing life-and-death choices don't really act according to the rational actor model--and might even be insulted by its suggested use. Here he's answering two questions: "What is wrong with our legal system's notion of human behavior?"; and "What led you to study the link between law and cognition?" This begins to get at some very deep aspects of how our legal and political systems are as mistaken as the idea that the Sun revolves around the Earth.