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Championing the 'rights of things'

Apr 18, 2014 6:00 AM

IN 1917, a 20th-century artist, Marcel Duchamp, laid a standard urinal flat on its back and called it "Fountain". His provocative move is said to be the invention of conceptual art, and one of its readings was that art was something you p***ed on. Seventy-seven years later, in 1994, two artists