so in other words, I'm using this strategy in my mix,

换句话说就是我采用了那个策略
then that strategy is also a best response to what everyone else is doing.

那么该策略本身是一个最佳对策
Okay, so from a math point of view

好了从数学的角度来看
this is the big idea of the day, this board.

这块黑板上的内容就是今天的重点
If you're having trouble reading this at the back,

如果你坐在后面看不清
trust me I've written that up on the handout

没关系我把它们写在讲义里面了
that will appear magically on the computer, at the end of class.

课后回去用电脑去看吧
At the moment you're staring at this, it's all a bit new,

刚开始你们可能觉得这些知识挺新鲜
and as well as being new, you're saying, okay but so what,

但你们可能也会有这样的疑问
why do I care about this seemingly mundane fact?

我为什么要关心这个很平常的结论呢
The reason we're gonna turn out to care about this seemingly mundane fact,

我们之所以要关注这个很平常的结论
is that this fact is going to

是因为懂了它