There is an old story of a boilermaker who was hired to fix a huge steamship boiler system that was not working well. After listening to the engineer’s description of the problems and asking a few questions, he went to the boiler room. He looked at the maze of twisting pipes, listened to the thump of the boiler and the hiss of escaping steam for a few minutes, and felt some pipes with his hands. Then he hummed softly to himself, reached into his overalls and took out a small hammer, and tapped a bright red valve, once. Immediately the entire system began working perfectly, and the boilermaker went home. When the steamship owner received a bill for $1,000 he complained that the boilermaker had only been in the engine room for fifteen minutes, and requested an itemized bill. This is what the boilermaker sent him:
For tapping with hammer: $ .50
For knowing where to tap: 999.50
Total: $1,000.00