In his early thirties, Marcel Duchamp (1887-1968) convinced everyone that he had abandoned making art in favor of playing chess. There he produced his final masterpiece: Étant donnés: 1º la chute d'eau, 2º le gaz déclairage, composed of a battered wood door through which one views a prone, nude female, holding aloft an antique gas lamp against a landscape of trees, waterfall, and sky.
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