A young man was considered a half-wit in the village.
Wherever he was offered a choice between a dime1 and a nickel2, he always chose the nickel. When this had gone on many times, a kind old man told him that a dime was worth twice as much as a nickel, so he should choose the dime in the future.
The half-wit said, oh, I know the difference, but if I choose the dime, they'd sTOP offering me the choice and then I'd never even get the nickel.
村子里有个青年被觉得是个白痴。
每次有人拿出一个一角的银币和一个五分的镍币让他从中选一个，他一直选那个镍币。他如此挑选了好多次后，有个好心的老人告诉他，一角的银币要值两个五分的镍币，将来应该选一角的银币。
白痴说：哦，我了解它们有什么区别。可是，假如我选了银币，他们就不会再让我挑选了，那我就连一个五分的镍币也捞不到了。