A Hosting company had a seemingly very impossible problem with a very expensive server machine. Staff engineers tried everything they could ever think of, but they couldn’t solve it. Very desperate, they contacted a retired engineer with  very excellent reputation for repairing all things technical.

The engineer spent 1 whole day studying the server machine. With a piece of chalk he marked the problem spot with an X. the part was then replaced, and the machine worked perfectly again. But the hosting company’s accountant received the engineer’s bill for $100,000 they demanded and did not tally his charges.  The engineer responded. “One chalk mark, $1.”knowing where to put it, $99,999.”