The answer is I can't. OK, in the simple case of integers I can, but in the case of something more complex like faces or fingerprints or passwords for that matter, it's hard to design a hash function that has completely even distribution, meaning that it takes any input into exactly one output spot.

答案是我不能，好吧,在简单的整数的例子中,我可以做到，但是在一些更复杂的场景中,比如面部，指纹，密码相关的问题中，很难设计一个哈希函数具备完全平均的分配,也就是说，做到对任一输入，可以准确地得到相应的唯一输出,因此在一个哈希问题中。

麻省理工公开课 - 计算机科学及编程导论课程节选

And So, we study different problems like recognizing faces or language or motor control or logic.

我们研究各种在行为过程出现的问题,诸如面孔识别,语言,运动控制,以及逻辑

耶鲁公开课 - 心理学导论课程节选

And in mock trials, people with baby faces are more likely to be found innocent than people like Ben Affleck, who do not have baby faces.

在模拟法庭，拥有娃娃脸的人比像本·阿弗莱克的人,更易被判定无罪，他没有娃娃脸。

耶鲁公开课 - 心理学导论课程节选

When you see black faces subjects are more likely to fill this with words like "hostile" while whites more likely to fill it with words like "hospital."

当看到黑人照片时，实验对象,更可能填上“hostile“这样的词“,看到白人时，更可能填上“hospital“这样的词“

耶鲁公开课 - 心理学导论课程节选