It's interesting that this person uses the word calculation; this person has the idea--this was-- 1600 was around the year when probability theory was invented.

有意思的是,这个人用了"计算"这个词,这个人想到了这个主意,概率论正是1600年左右产生的

耶鲁公开课 - 金融市场课程节选

Was it you who started it or you?

你们是谁想到的这个主意？

普林斯顿公开课 - 人性课程节选