Robert S. Pindyck is the Bank of Tokyo-Mitsubishi Ltd. Professor of Economics and Finance in the Sloan School of Management at M.I.T. Daniel L. Rubinfeld is the Robert L. Bridges Professor of Law and Professor of Economics at the University of California, Berkely, and Visiting Professor of Law at NYU. Both received their Ph.D's from M.I.T., Pindyck in 1971 and Rubinfeld in 1972. Professor Pindyck's research and writing have covered a variety of topics in microeconomics, including the effects of uncertainty on firm behavior and market structure, the determinants of market power, the behavior of natural resource, commodity, and financial markets, and criteria for investment decisions. Professor Rubinfeld, who served as chief economist at the Department of Justice in 1997 and 1998, is the author of a variety of articles relating to antitrust, competition policy, law and economics, law and statistics, and public economics.Pindyck and Rubinfeld are also co-authors of Econometric Models and Economic Forecasts, another best-selling textbook that may yet be turned into a feature film. Always looking for ways to earn some extra spending money, the two authors recently enrolled as human subjects in a double-blind test of a new hair restoration medication. Rubinfeld strongly suspects that he is being given the placebo.This is probably more than you want to know about these authors, but for further information, see their websites: http://web.mit.edu/rpindyck/www and http://www.law.berkeley.edu/faculty/rubinfeldd.