if I think it's more likely than this crossing point Y I think it's very likely they're going to choose Right.

如果我觉得对手选右的概率,会在交点Y的右方

耶鲁公开课 - 博弈论课程节选

So that crossing point actually occurs at a - c over 3b.

因此交点确实是/3b

耶鲁公开课 - 博弈论课程节选