But I wonder whether, when one is concerned with history (and Foucault wants to write a history), a strict structuralism is pos- sible, and, especially, whether, if only for the sake of order and within the order of its own descriptions, such a study can avoid all etiological questions, all questions bearing, shall we say, on the center of gravity of the structure. The legitimate renunciation of a certain style of causality perhaps does not give one the right to renounce all etiological demands.