Gentlemen - How about this one

A BMW mechanic was removing the cylinder head from the engine of a BMW 7 Series when he spotted a well-known cardiac surgeon in the garage. The cardiac surgeon was there waiting for the service manager to come and take a look at his car when the mechanic shouted across the garage,

"Hey Doc, want to take a look at this?" The surgeon, a bit surprised, walked over to where the mechanic was working. The mechanic straightened up, wiped his hands on a rag and asked,
"So Doc, look at this engine. I opened its heart, took the valves out, repaired or replaced anything damaged, and then put everything back in, and when I finished, it worked just like new. So how is it that I make £30,000 a year and you make £600,000, when you and I are doing basically the same work?"

The cardiac surgeon paused, leaned over and whispered to the mechanic:

"Try doing it with the engine running."

Interesting viewpoint!

With Kind Regards

Vladek