Gerd Gigerenzer is Director of the Harding Center for Risk Literacy at the University of Potsdam, Director Emeritus at the Max Planck Institute for Human Development, and Partner of Simply Rational—the Institute for Decisions. He is the author of Calculated Risks, Gut Feelings, Risk Savvy,and How to Stay Smart in a Smart World (MIT Press).

Christoph Engel is Director of the Max Planck Institute for Research on Collective Goods, Bonn, and a member of the Faculty of Law and Economics at the University of Bonn. He is the author of Generating Predictability: Institutional Analysis and Design and other books.