A Senseful Story

A mechanic was removing the engine parts from a motorcycle, when he spoted a famour heart surgeon in his shop. He called the surgeon and said "Look at this engine. I opened it's heart, took the valves out, repaired and put them back. So why do I get such a small salary and you get a big one when you and I are doing the same work?". The surgeon paused and whispered "Try to do it when th engine is running". :-)