Robert Castel is a French philosopher and sociologist who studies the functioning of modern societies. His early works place him close to problems close to his colleagues Michel Foucault and Gilles Deleuze, especially psychiatry and psychoanalysis. More recently he has studied the notion of risk and disaffiliation. Director of Studies at the École des Hautes Études en Sciences Sociales (Paris). Together with Michel Foucault and Pierre Bordieu, he participated in the creation of the Sociology degree in Paris. From his extensive production, Editorial Topía published Las trampas de la exclusión. Work and social utility. In August of last year he spent a week in Buenos Aires giving several conferences. During his stay, Topía magazine made this report where, among other issues, he addresses some of the causes of the social explosion that would occur in France a few months later.