Quote Originally Posted by LeFou

Also the one where you can't go from A to B because first you have to go halfway, then half the remaining distance, then halfway again, etc.

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This reminds me of a "joke" that my physics teacher told us...
How do you tell the difference between a physicicst and a mathematician?
Give them the following question and see how they react. "You are standing in a room with a beautiful women standing naked not to far away. You can only get to her by walking to her and each step you take must be no more than half the size of the previous one and the first step can be no further than half the distance."

The mathmatician will look very sad and moan that he can't get to her. The physician will look very happy and say that he can get close enough that it does not matter.