It’s been a long week and Albert Einstein, the world-renown scientist is scheduled to speak at yet another conference.

On the way there, Einstein tells his driver, “I’m sick of all these conferences. I always say the same things over and over!”

The driver agrees, “You’re right. As your driver, I attended all of them, and even though I don’t know anything about science, I could give the conference in your place.”

Einstein looks at the man who is similar in stature to himself, and says, “Let’s switch places then!”

So they switch clothes, the driver rumples his own bushy head of hair, and as soon as they arrive, the driver who by now looks quite a bit like the famous Einstein goes on stage and starts giving the usual speech, while the real Einstein, with hair tucked in the driver’s cap and wearing his uniform, attends it.

In the crowd, there is one academic who wants to impress the crowd with his own knowledge. He poses a question on an obscure topic sure to trip up the brilliant Albert Einstein. So this guy stands up and interrupts the conference by posing his very difficult question.

The whole room goes silent, holding their breath, waiting for the response.

The driver looks at him, dead in the eye, and says, “Sir, your question is so easy to answer that I’m going to let my driver reply to it for me.”