The head of operations is so relieved. He thanks the technician and asks him what he owes him. The technician says, “$10,000.” The head of operations is shocked. “What do you mean, $10,000? You were here for a few minutes. You turned one single screw. Anyone could have done that. I need an itemized bill, please.” The technician reaches into his pocket, pulls out a notepad, scribbles a few seconds, and hands the other man the bill. The head of operations reads it and immediately pays him. The bill read: “Turning screw: $1. Knowing which screw to turn: $9,999.”
