Leo Katz, professor of law at the University of Pennsylvania, talks with EconTalk host Russ Roberts about his book, Why the Law Is So Perverse. Katz argues that certain seemingly inexplicable features of the law are the result of conflicts between multiple objectives that the law or the courts must trade off against each other. Katz also argues that structure of the law and how it is enforced are analogous to certain inevitable ambiguities of collective choice and voting theory.