THE CARDIOLOGIST AND THE MECHANIC 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 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 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.'