"Two policemen are considering the problem of catching the bandit. One of them starts to calculate the optimal mixed strategy for the chase. The other policeman protests.
'While we're doodling,' he points out, 'he is making his getaway.'
'Relax,' says the game-theorist policeman. 'He's got to figure it out too, don't he?'"  

两个警察在考虑如何抓住匪徒。其中一个开始计算追捕的最优混合策略。另一个警察不干了：“我们在这里扯淡的时候，”他说，“那家伙已经跑路了！”“放心，”那位博弈论学者型的警察说，“他也得算出来如何最优才行，不是吗？”

原文来自：http://netec.mcc.ac.uk/jokec.html