The view championed by George Dickie in 1974, following on work by Arthur Danto, that art institutions such as museums and galleries, and specific agents working within them, have the power to dictate what is art and what is not. There is no property of being a work of art other than being deemed to be such by authorized members of the art world. Like other social constructivist views, the theory has some difficulty understanding what the experts go on when they themselves debate whether something should be counted as art.