## 科学观点：离散的空间和时间概念

{《四维旅行》[英]R·L·普瓦德万 湖南科学技术出版社 }

## 物理：A Joke (about the minimum scale)

“A psychologist makes an experiment with a mathematician and a physicist. He puts a good-looking, naked woman in a bed in one corner of the room and the mathematician on a chair in another one, and tells him: ‘I´ll half the distance between you and the woman every five minutes, and you´re not allowed to stand up.’ the mathematician runs away, yelling: ‘in that case, I´ll never get to this woman!’. After that, the psychologist takes the physicist and tells him the plan. The physicist starts grinning. the psychologist asks him: ‘but you´ll never get to this woman?’, the physicists tells him: ‘sure, but for all practical things this is a good approximation.’ “

So the minimum scale must exist. Otherwise we will never kiss with our girls.