People should feel free to correct my arithmetic because it's often wrong; 90 right? Two-thirds of 90, whoops, what do I need, start again.

我要是算错了要提醒我,我总算错,90对吧,90的2/3,我说错了

耶鲁公开课 - 博弈论课程节选

I should warn you again that I'm very likely to make mistakes when I'm doing this kind of thing, so please catch me I do.

我还得提醒一下大家,我总算错,如果发现错误请马上指出

耶鲁公开课 - 博弈论课程节选