Jonathan Anomaly is Lecturer in the Duke-UNC program in Philosophy, Politics, and Economics. Geoffrey Brennan is Research Professor of Political Science at Duke University, Professor of Philosophy at UNC Chapel Hill, and Professor of Economics at the Australian National University. He is the coauthor of Explaining Norms (OUP, 2013) and The Economy of Esteem (OUP, 2004). Michael C. Munger is Professor of Political Science and Economics at Duke University. He is the coauthor of Choosing in Groups: Analytical Politics Revisited (2015). Geoffrey Sayre-McCord is Distinguished Professor of Philosophy at UNC Chapel Hill and the editor of Hume: Moral Philosophy (2006). All four authors teach in and are members of the Duke-UNC program in philosophy, politics, and economics.