My friend, a few months back, employed a young chap for general work around the hanger. He was willing, but needed to be given clear instructions for most of his duties. When told to sweep the hanger floor, he cheerfully went and found the broom and made a start. Half an hour later, it was noticed that he had the broom upside down. His explanation was that he'd never before swept a floor.
He jumped before he ws pushed.