**Dr.dr. Peter Marks is an associate professor at the Department of Public Administration at Erasmus University Rotterdam.** Peter Marks studied economics and philosophy of economics at Erasmus University Rotterdam. His Ph.D. focused on an alternative explanatory model in game theory. He is a member of the research group *Governance of Complex Systems*. His theoretical focus is on the development and application of complexity sciences in researching public decision making processes, e.g. the decision making processes of the High Speed Train system in the Netherlands since 1993. Peter Marks is also director of the two year *mid-career Master Program Public Administration*. He in this position focusses on the theoretical and practical development of teaching programs to enhance and strengthen the two year mid-career master program.