The usual image of how creativity happens: A composer inadvertently hears a melody rising from a babbling brook, or an ad agency creative director crumples page after page of aborted ideas ripped from the typewriter until the right one lands. But creativity, some claim, can come from a far less elusive muse — from a structured process, one that opens up the ranks of the creative to a wider swath than the Steve Jobs, Jonas Salks and Franz Schuberts of the universe. “I think there are individual differences in our propensity to be creative,” Twitter says Wharton marketing professor Rom Schrift, “but having […]