Markku Lehtonen is an interdisciplinary social scientist at the University Pompeu Fabra in Barcelona, Spain.Ana Prades is the head of of the Centre for Socio-technical Research (CISOT) at CIEMAT (Research Centre for Energy, Technology and the Environment) in Barcelona, Spain.Josep Espluga Trenc is Associate Professor of the Department of Sociology at the Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain.Stathis Arapostathis is Professor in the Department of History and Philosophy of Science at the National and Kapodistrian University of Athens (NKUA), Greece.