Brian Skyrms is Distinguished Professor of Logic and Philosophy of Science and of Economics at the University of California, Irvine and Professor of Philosophy at Stanford University, California. His publications include The Stag Hunt and the Evolution of Social Structure (Cambridge, 2004), Signals: Evolution, Learning, and Information (2010), From Zeno to Arbitrage: Essays on Quantity, Coherence, and Induction (2012) and Evolution of the Social Contract (Cambridge, 1996), which won the 1999 Lakatos Award in Philosophy of Science.