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Repairing Hearts and Getting Older

A mechanic was removing a cylinder head from the motor of a Harley
motorcycle when he spotted a well-known heart surgeon in his shop.
The surgeon was there, waiting for the service manager to come and
take a look at his bike.

The mechanic shouted across the garage, "Hey, Doc, can I ask you a
question?"

The surgeon a bit surprised, walked over to the mechanic working on
the motorcycle.

The mechanic straightened up, wiped his hands on a rag and asked,
"Doc, look at this engine. I open its heart, take the valves out, fix
'em, put 'em back in, and when I finish, it works just like new. So how
come I get such a small salary and you get the really big bucks, when
you and I are doing basically the same work?"

The surgeon paused, smiled and leaned over, and whispered to the
mechanic: "Try doing it with the engine running."
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