Wiebe E. Bijker is Professor at Maastricht University and the author of Of Bicycles, Bakelites, and Bulbs: Toward a Theory of Sociotechnical Change (MIT Press) and other books. Roland Bal is Professor in and Founding Chair of the Department of Healthcare Governance of the Institute of Health Policy and Management, Rotterdam. Ruud Hendriks is Assistant Professor of Philosophy at the University of Maastricht.