A successful Scientist was on his way to a seminar where he was supposed to give a lecture on his new breakthrough in research. His chauffeur saw his tired look and felt sorry for him "Sir why dont you take the day off today", he said, "I've heard your lecture so many times by now I know it by heart. I can give the lecture".
The Scientist thought this was a great idea, since he was sick and tired of giving the same lecture over and over again.
When they arrived at the seminar, the Scientist put on the chauffeur's hat and sat at the back of the lecture hall. His trusted chauffeur walked to the podium and gave an excellent lecture.
At the end of the lecture the chauffeur asked, just as his master always does, "Are there any questions?" One of the Professors asked a long question. The chauffeur was panicking silently but managed to pull himself together.
"That, professor, is a very simple question," he answered, "in fact, it is so simple even my chauffeur can answer it."
(I got this as an email forward and thought of sharing with you.
Even Ive been working with a Medical Doctor for more than a decade, helping him with his presentations & lectures and learned a few of them by heart.)