 Jean-François Lyotard (1924–1998) was a philosopher and literary theorist.He is well known for his articulation of Postmodernism after the late 1970s.Other authors include Jean Baudrillard, who started with a situationist criticism of Consumption Society in the 1970s to evolve towards a reflection on simulation and virtual reality, Paul Virilio, both a philosopher and an urbanist, Cornelius Castoriadis, who was, along with Claude Lefort, co-founder of "Socialisme ou Barbarie" and criticized orthodox Marxism, Alain Badiou, François Laruelle, who developed "Non-philosophy" starting in the 1980s, Philippe Lacoue-Labarthe, Paul Ricoeur (administrator of the University of Nanterre during May '68), Emmanuel Levinas, Vincent Descombes, etc.