Last year I was virtually ready to drop it and then, I kid you not,that very afternoon,I came across a quote.

去年我真的都要放弃这个讨论了，不开玩笑，那天下午，我看到一句引言。

耶鲁公开课 - 死亡课程节选

The way we read this graph, is you give me an S2, I read across to the pink line and drop down, and that tells me the best response for Player I.

这个图的作用是,给定一个S2,找到粉线对应的坐标,然后就能找出参与人I的最佳对策

耶鲁公开课 - 博弈论课程节选