Eric Brian, Director of Studies with Charles Alunni, Head of the Laboratory at the ENS-Ulm The Disciplinary Laboratory “Pensée des Sciences”, active at the ENS since 1995, aims to explore the most current question of disciplines as different from biology, physics, mathematics or social sciences. It is indeed the diversity of interests and approaches that need to be collected and felt in the same gesture. The theme “Act, power, virtuality” governs...