Back when Einstein was giving lectures to Universities, he traveled by car. During one journey to a certain university, his driver remarked ""Dr. Einstein, I have heard you deliver that lecture over 20 times. I know it by heart and I am certain I could give it myself."" Einstein thought for a bit and replied ""Well, I'll give you the chance. They don't know me at the next University, so when we get there, I'll put on your cap, and you introduce yourself as Dr. Einstein and give the lecture"". Su…