Samuel Bowles is Research Professor and Director of the Behavioral Sciences Program at the Santa Fe Institute in New Mexico. He has taught microeconomic theory to undergraduates and PhD candidates at Harvard University, the University of Massachusetts, and the University of Siena. He is part of the global CORE team, writers of The Economy and Economy, Society, and Public Policy. Political leaders including President Nelson Mandela, Dr. Martin Luther King, Jr., and Senator Robert Kennedy have sought his advice on economic policy. Simon D. Halliday is an Associate Professor in the Economics Department at the University of Bristol. He has also taught microeconomics, game theory, and industrial organization to graduate and undergraduate students at Smith College in the U.S., the University of Cape Town, and Royal Holloway, University of London. In addition to these fields he is a specialist in behavioral economics and economics education.