There is a story that tells of a man who advertised for a coachman, and
three men answered the advertisement. They all made a good appearance,
and the man was at a loss to know which one to choose.
Finally he hit upon this scheme. There was a road near his house that
ran along the edge of a precipice. The man asked each one of these
coachmen in turn how close he could drive to the cliff without going
over. The first said he could drive within six inches of it; the second
said he could drive within two inches of it. When the third man was
asked he said, "I should keep away from it as far as possible."