Arrow Impossibility Theorem

Eric Maskin is the Adams University Professor at Harvard University. He received the 2007 Nobel Memorial Prize in Economics (with L. Hurwicz and R. Myerson) for laying the foundations of mechanism design theory. He has also contributed to game theory, contract theory, social choice theory, political economy, and other areas of economics. Amartya Sen is the Thomas W. Lamont University Professor and Professor of Economics and Philosophy at Harvard University. In 1998 he was awarded the Nobel Memorial Prize in Economic Sciences, and in 1999 he was awarded the Bharat Ratna, India's highest civilian award. He is also a senior fellow at the Harvard Society of Fellows; distinguished fellow of All Souls College, Oxford; and a Fellow of Trinity College, Cambridge. His books have been translated into more than thirty languages.

Without hyperbole, no postwar intellectual of the first rank has done more good for more people-above all, many of the world's poorest-than Amartya Sen. -- Boyd Tonkin The Independent What is Arrow's impossibility theorem? Why is it true? What are its implications for democratic decision making? Is its nihilism justified? These are the kinds of questions addressed in Maskin and Sen's masterful Arrow lectures. These lectures and the accompanying essays provide an accessible introduction to Kenneth J. Arrow's theorem for the neophyte and much food for thought for the cognoscente. -- John A. Weymark, Vanderbilt University How vital it is to understand the ideas behind Kenneth J. Arrow's impossibility theorem if we want to design reasonably fair ways of coming to consensus decisions that take equitable account of individual preferences. This book is a marvelous introduction to the theorem, a keystone in the theory of social choice. We are treated to a discussion of that theory-its origin, background, and the challenges it points to-by some of its great architects. -- Barry Mazur, Harvard University, author of Imagining Numbers The pioneers of social choice theory give us lively, enjoyable, and stimulating lectures and exchanges of ideas. Their views, more than sixty years after the publication of Kenneth J. Arrow's theorem, are of paramount interest to anyone aware of the difficulties of collective decisions. -- Marc Fleurbaey, Princeton University

• Acknowledgments Introduction, by Prasanta K. Pattanaik Part 1: The Lectures Opening Remarks, by Joseph E. Stiglitz Arrow and the Impossibility Theorem, by Amartya Sen The Arrow Impossibility Theorem: Where Do We Go From Here?, by Eric Maskin Commentary, by Kenneth J. Arrow Part II: Supplemental Materials The Informational Basis of Social Choice, by Amartya Sen On The Robustness of Majority Rule, by Partha Dasgupta and Eric Maskin The Origins of the Impossibility Theorem, by Kenneth J. Arrow Notes on Contributors