I thank Daniel Abebe, Barry E. Adler, Kenneth Ayotte, Adam B. Badawi, Douglas G. Baird, Omri Ben-Shahar, Erin M. Casey, Stephen Choi, Lee Anne Fennell, Joseph A. Grundfest, M. Todd Henderson, William Hubbard, Mitchell Kane, Ashley Keller, Randall L. Klein, Saul Levmore, Douglas Lichtman, Anup Malani, Troy McKenzie, Jon D. Michaels, Anthony Niblett, Randal C. Picker, Eric Posner, Robert K. Rasmussen, Andres Sawicki, Naomi Schoenbaum, Julia Simon-Kerr, Richard Squire, Lior Strahilevitz, Matthew Tokson, George G. Triantis, Noah Zatz, participants at the Annual Meeting of the American Law and Economics Association, participants at the Annual Meeting of the Midwestern Law and Economics Association, participants at the University of Chicago Law School Faculty Works-in-Progress Workshop, participants at the University of Southern California Center in Law, Economics, and Organization Workshop, and the faculties of Columbia Law School, Cornell Law School, Emory Law School, Marquette University Law School, Stanford Law School, the University of Alabama School of Law, University of California Irvine School of Law, the University of Chicago Law School, University of Colorado Law School, University of Georgia Law School, the University of Minnesota Law School, and Vanderbilt University Law School for helpful comments and discussion.