Cardiologist and Motorcycle repair man

A motorcycle mechanic was removing a cylinder-head from the motor of a Harley-Davidson when he spotted a well-known cardiologist in his shop.

The cardiologist was there waiting for the service manager to come and 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 opened 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 make $1,695,000 when you and I are doing basically the same work?'

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

'Try doing it with the engine running'.