A mechanic was removing a  cylinder-head from the motor of a
Harley motorcycle when he spotted a  well-known cardiologist in
his shop. The cardiologist was there 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 (a pretty small salary)
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."