You've got a picture of somebody's face, it's a million pixels. Each pixel has a range of values from zero to 256. I want to hash a face with some function into an integer.

你有一个人的脸部照片，它有一百万个像素,每个像素的值范围在0到256之间,我想用某个函数将一张脸部照片。

麻省理工公开课 - 计算机科学及编程导论课程节选

- After all, if you knew-- suppose we had the birthmarks that told you -- when you were going to die-- if you had that kind of a birthmark, you would face your entire life with the burden of knowing, I've got 48 years left, 47 years left, 50 years left.

毕竟，如果你知道-,假设我们有个胎记能告诉你,你什么时候去世-,如果你有那种胎记，你一辈子都将面对那种知情的压力，我还剩48年，还剩47年，还剩50年。

耶鲁公开课 - 死亡课程节选