Jean-Pierre Durand. Professor of sociology at the Pierre Naville Center (Université d´Evry Paris-Saclay and director of the Nouvelle Revue du Travail. He is the author and co-author of a variety of articles and books, translated into different languages, among which the following may be mentioned: L ´après-fordisme (with R. Boyer, Syros, 1994, 1998); L´innovation dans le travail (with F. Moatty and G. Tiffon, Octares Édition, 2014); The invisible chain, tense flow and voluntary servitude (FCE , Mexico 2011), and the most recent with Joyce Sebag, La sociologie filmique (CNRS Éditions, 2000).