If the average age of death was something like forty-five, maybe a fifty-fifty chance of--high risk-- of one of the parents dying.

那么这个概率其实很低,不是吗,大概有高达50%的可能性,双亲中的一人会死去

耶鲁公开课 - 金融市场课程节选

Back in the 1840s, life insurance was very important because the average expectancy of life was only something like forty-five years, so that meant parents were dying left and right.

在19世纪40年代的时候,寿险是非常重要的,因为当时的人均期望寿命,仅为45岁左右,这意味着双亲平均只能活到45岁

耶鲁公开课 - 金融市场课程节选

One year we actually had something like forty-two people signed up, and the course was much bigger, and we thought they all thought they were getting a free prize or something for signing up, there were so many of them.

有一年还真有,大概四十二个学生选了这课,那课堂大多了,当时我们觉得那些学生,是不是觉得选课能有奖励还是什么的,总之人特别多

耶鲁公开课 - 1871年后的法国课程节选