There’s an anecdote that goes like this:

An important machine in a factory stops working. No matter what they do they can’t get it to work again.

So they bring in a specialist to solve the problem, for an agreed fee of $1000

The guy checks the machine over and then goes and presses a specific button and the machine is back working again.

So the factory manager goes: “All you did was press a button! Why should I pay you $1000 for pressing a button?!”

To which the specialist answers: “Well, you see, you’re paying me just $1 to press the button. The other $999 are for knowing which button to press”.