Early in his career, Darryl F. Zanuck spent most of his time in the cutting room. He soon learned that a skillful editor could often turn a dud into a diamond simply by cutting and rearranging scenes. "I realized that all isn't lost when the script is a dud, the dirctor is a deadhead, and the actors don't know their asses from their elbows," he recalled years later. "Unless it is a complete and utter disaster, there is no single film that can't be rescued and turned into a seeable movie."
Indeed, while working for Warner Bros., Zanuck turned a certain flop entitled Tiger Rose (1929) into a passable film after two days of judicious editing.
[Zanuck rescued many more films as head of Twentieth Century-Fox.]