Nicolas Petrosky-Nadeau, formerly on the faculty of the Tepper School of Business at Carnegie Mellon University, is Research Adviser in the Economic Research Department of the Federal Reserve Bank of San Francisco. Etienne Wasmer, formerly Professor of Economics at Sciences Po, Paris, where he is also Cofounder and Codirector of the Interdisciplinary Research Center for the Evaluation of Public Policies, is Professor of Economics at New York University Abu Dhabi, a school of New York University in the UEA, as of January 2018.