传说古希腊神话中有个善跑的英雄,叫阿基里斯。有一次,他和乌龟赛跑,乌龟在前面跑,他在后面追,但他怎么追也追不上乌龟。这是因为阿基里斯首先必须到达被追者的出发点。可是当他追到乌龟的起点时,乌龟已经又向前爬了一定的距离。于是,一个新的起点产生了,阿基里斯必须继续追,而当他追到乌龟这个新的起点时,乌龟又向前爬了一段距离。阿基里斯只能再追向那个更新的起点。就这样,乌龟 Legend has it that there is a good run hero in ancient Greek mythology, Achilles. Once, he and the tortoise race, the tortoise ran in front, he chased behind, but how he chase can not catch up with the turtle. This is because Achilles must first reach the starting point of being pursued. But when he caught the beginning of the tortoise, the tortoise had climbed forward a certain distance. As a result, a new beginning came into being and Achilles must continue chasing and when he caught up with the new starting point for the tortoise, the turtle climbed further forward. Achilles can only chase that new beginning again. That’s it, turtle