Claude Ménard is Professor of Economics (Emeritus) at the Centre d’Economie de la Sorbonne (University of Paris Panthéon-Sorbonne, France). He has published extensively in peer-reviewed journals and authored several books, most recently Network Infrastructures: Technology Meets Institutions (with Rolf Kunneke and John Groenewegen) and Advanced Introduction to New Institutional Economics (with Mary Shirley).Mary M. Shirley is President of the Ronald Coase Institute (USA). She has a PhD in economics, worked for over 20 years in World Bank research, and is the author of numerous scholarly articles and books, including Advanced Introduction to New Institutional Economics (with Claude Ménard) and Institutions and Development.