About fifty years ago (the exact date is debatable) a small business team that would become the most commercially successful entity in the history of the performing arts made a significant—and risky—new addition, which would forever alter the organization's brand.
What made the hiring risky was the fact that this individual—who immediately became a full partner in the fledgling enterprise—had zero performing experience and almost no technical ability to do the job.
But the senior partner, John Lennon, prevailed on his mates, Paul McCartney and George Harrison, to bring his friend Stu Sutcliffe on board—and the band that was to become the Beatles began to take shape. (Pete Best would join a few months later.)
Stu's contribution to the band turned out to be more aesthetic than musical (as he never quite mastered the electric bass, according to most reports), but that's not to diminish his importance to the band. A promising young painter with a fey presence, Sutcliffe had an artistic sensibility that attracted young artistes to the band when they performed in Hamburg—one of whom, Astrid Kirchherr, ended up the band's first photographer and fashion mentor.
Under Astrid's spell, Stu became the first in the group to adopt the German "mop-top" haircut. By the time Stu died tragically from a cerebral hemorrhage a year-and-a-half later, his hair and fashion choices had left an indelible mark on the band—giving the Beatles a truly revolutionary look by the time they cracked the British charts. (Meanwhile John Lennon never seemed to get over Stu's death; Yoko Ono, who came along later, said "I felt I knew him… John referred to Stuart daily.")
The Beatle hair-do of course did much to provoke the teen hysteria that propelled them to worldwide renown, before the public fully realized the musical genius underneath it. This answers the question that has vexed musicologists for generations: "Who put the 'do' in 'Love Me Do?'" Such was the legacy of the mysterious Stu Sutcliffe, the "lost Beatle."
This of course raises the perennial question: when should you hire someone who has little experience or technical ability for the job?