in Nature in 1905.

《自然》杂志上的一篇文章
This idea is about a hundred years old.

这个观点已有100年历史
What Pearson wrote about was–well,

皮尔森写道...
the example he gave was a drunk.

他给我们的例子是一个醉鬼
Imagine a person who is so drunk that every step that

试想一下一个喝醉酒的人
person takes is random and independent of the preceding step.

他迈出的每一步都是独立于上一步的随机步伐
Suppose we--this is a 1905 story--

假设我们...这是1905年的事情...
suppose we had a lamppost and we had a drunk standing

假设有一根路灯柱
at the lamppost--I've drawn a picture,

且有一个醉鬼站在灯柱下...我画了张图
that's a lamp post and that's a drunk.

这是灯柱然后这是醉鬼
This person is so intoxicated

这人烂醉如泥
that steps are completely random

因此他的步伐是完全随机的