The cardiologist was waiting for the service manager to come take a look at his bike when the mechanic shouted across the garage, "Hey Doc, want to take a look at this?"

The cardiologist, a bit surprised, walked over to where the mechanic was working on the motorcycle.

The mechanic straightened up, wiped his hands on a rag and asked, "So Doc, look at this engine. I open its heart, take the valves out, repair any damage, and then put them back in, and when I finish, it works just like new".

"So how come I make $39,675 a year and you get the really big bucks $1,695,759 when you and I are doing basically the same work?"

The cardiologist paused, smiled and leaned over, then whispered to the mechanic...

"Try doing it with the engine running..."