And when someone says your words or actions hit the nail on the head, he means what you said or did was exactly right.

VOA: special.2009.09.20

Right now we have actions, strategies for people to take, and we know what the outcomes are, but we're missing something that will make this a game.

目前我们涉及行为,策略,局中人,而且我们知道不同的结果,但是我们忽略了一个博弈必备的因素

耶鲁公开课 - 博弈论课程节选

All right, so here once again is our same matrix with me and my pair, choosing actions Alpha and Beta, but this time I'm going to put numbers in here.

我们首先讨论我和我对手,选择α或β的矩阵,不过这次我们用数字来表述

耶鲁公开课 - 博弈论课程节选