The ship had stopped, mid ocean; big problem with the steam power. Captain says I'll pay anyone who can fix it $100. A small, shabby figure appeared on the deck from the bowls of the ship, "I can fix her Skipper" he mumbled. "Go to" says the Skipper. About 5 minutes later there is a mighty clang and the engines rumble into life. The shabby figure reappeared on deck, in his hand a sledge hammer. "How did you do that?" asks the Skipper. "Well" says old mate "I hit a pipe with my hammer".
"A hundred bucks for hitting a pipe" says the boss, "how will I write that into the accounts".
"Easy" says old mate; "you pay me $1.00 for hitting the pipe and $99 for knowing where to hit it"....
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Any monkey can hit a pipe with a big hammer. QED.