Paul Chemetov, Henri Ciriani, Stanislas Fiszer, Christian Hauvette, Georges Maurios, Jean Nouvel, Gilles Perraudin, Roland Simounet: eight great architects, with contrasting profiles, confronted with their construction practice. Guided par a questionnaire as precise as it is open, Virginie Picon-Lefebvre and Cyrille Simmonet challenge them on the notion of constructive truth