Samuel Bowles is Research Professor and Director of the Behavioral Sciences Program at the Santa Fe Institute and Professor of Economics at the University of Siena. He is coauthor of Notes and Problems in Microeconomic Theory (North Holland Texts in Mathematical Economics) and Schooling in Capitalist America (Basic Books), and has published articles, most recently, in the American Economic Review, Nature, the Quarterly Journal of Economics, the Economic Journal, and the Journal of Theoretical Biology.