Olivier Blanchard is Economic Counselor and Director of the Research Department at the International Monetary Fund. He is the author of "Macroeconomics", among other books, and coauthor of "Lectures on Macroeconomics "(MIT Press). David Romer is Herman Royer Professor of Political Economy at the University of California, Berkeley, and author of "Advanced Macroeconomics". Michael Spence, co-recipient of the 2001 Nobel Prize in Economics, is Professor Emeritus of Management at Stanford University's Graduate School of Business and Professor of Economics at New York University's Stern School of Bu...