Marcel Boumans is historian and philosopher of science at Utrecht University. His main research focus is on understanding empirical research practices in economics from a philosophy of science-in-practice perspective. He is particularly interested in the practices of measurement and modeling and the role of mathematics in social science. These topics are covered by his most recent monograph Science outside the Laboratory (2015). His current research project is on vision and visualization, focused on an epistemological understanding of expert judgments.