Susan Sontag defines mashups — in 1977

From "On Photography": "Photography does not simply reproduce the real, it recycles it — a key procedure of modern society. In the form of photographic images, things and events are put to new uses, assigned new meanings which go beyond the distinctions between the beautiful and the ugly, the true and false, the useful and the useless, good taste and bad."

"In the form of a photograph the explosion of an A-bomb can be used to advertise a safe."

[via Noam Cohen and the New York Times]