49

This article examines the dynamics at work in the field of the social and solidarity economy in the context of the relativization of its founding models, on the one hand, and the intensification of public business logic which put its established values to the test, on the other. It deals with the institutional contexts from which the logics of social intervention are deployed. It is the fruit of collective work carried out by three directors of organizations of social and solidarity economy in Brittany. There they have tried to set down the bases for thinking about the cultural, political and institutional issues concerning those intermediary organizations on which the whole approach to social and medical-social action has been developed in our country. They try to rethink the intermediary institutional role of these social and solidarity economy organizations, based on an understanding inspired by the work of the psychoanalyst Jean-Pierre Lebrun on the anthropological transformation characterizing modernity, particularly the passage from a type of social bond entirely structured along an other-directed, vertical mode (with reference to the dominant patriarchal culture), to a type more dominated by the image of horizontality and networks.