Josiah Ober is Constantine Mitsotakis Professor in the School of Humanities and Sciences at Stanford University, where he holds joint appointments in the departments of political science and classics. He is the author of several books on classical Athenian political and intellectual history, most recently Political Dissent in Democratic Athens. He is now working on a project about the relationship between democratic political culture and the social circulation of knowledge. Naomi J. Norman is a Josiah Meigs Distinguished Teaching Professor of Classics at the University of Georgia, where she teaches courses in Greek, classical culture and classical archaeology, and serves as Director of the UGA Reacting to the Past program. Her current projects include a book on the archaeology of ancient Carthage, a textbook on classical archaeology and, with Carl Anderson and T. Keith Dix, a Reacting game on the Ides of March, Rome in 44 B.C.E. Mark C. Carnes is professor of history at Barnard College and creator of Reacting to the Past. He is the author of many books in American history and general editor of the 26-volume American National Biography, published by the ACLS and Oxford University Press.