Chapters 2 and 3 were inspired by my article, “The Next Epidemic: Bubbles and the Growth and Decay of Securities Regulation,” which appeared in Volume 38 of the Connecticut Law Review. Chapter 6 builds off my article, “Deregulation Pas De Deux: Dual Regulatory Classes of Financial Institutions and the Path to Financial Crisis in Sweden and the United States,” which appeared in Volume 15 of the journal Nexus. I began my research for Chapter 8 when writing “Laws Against Bubbles: An Experimental Asset Market Approach to Analyzing Financial Regulation,” which was published in the 2007 volume of the Wisconsin Law Review. A portion of Chapter 9 builds off my article, “Credit Derivatives, Leverage, and Financial Regulation’s Missing Macroeconomic Dimension,” which appeared in Volume 8 of the Berkeley Business Law Journal. In writing this book, I accumulated a long list of debts to family, friends, and colleagues. The following acknowledgments represent a meager and incomplete down payment. Margaret Blair, Jim Cox, and Gordon Smith have been generous mentors throughout my career. Margaret’s research and counsel shaped Chapter 9 in particular. Don Langevoort provided encouragement early in my career. It would be hard to isolate Anna Gelpern’s influence on this book. Barak Orbach provided guidance from the moment I started my first law review article until the end of this book. Thank you to my friend and colleague Vic Fleischer. Thank you also to Jay Livingstone for first suggesting that I read Edward Chancellor’s excellent Devil Take the Hindmost. Several chapters of this book benefitted mightily from participants at workshops or the audience at presentations, including at the following: the Southwest/ West Junior Law Faculty Workshop at the Arizona State University O’Connor College of Law, the University of Arizona James E. Rogers College of Law, the University of Colorado Law School, the University of Georgia School of Law, the University of Illinois College of Law, Loyola Law School in Los Angeles, Marquette University Law School, the University of New Mexico Department of Economics, the University of New Mexico School of Public Administration, and the Seattle University School of Law.