I hope it's not true that we only have pain, but nevertheless,

我们可别白受罪了不过
let's pretend it's true at least for now and see where it takes us.

假设它是对的它能说明什么呢
So a second observation of this model,

这个模型的第二个结论是
if we believe this model of education in which you don't learn anything,

如果你相信这个认为学习无用的模型
education is just being used by those people

教育实际上变成了人们
who are good anyway to separate from those people who were bad anyway,

区别优秀和较差的人的一种工具
then education in this model is socially wasteful.

即教育没有什么社会用途
Why is education socially wasteful in this model?

为什么这里教育是无社会用途的
In what sense is it socially wasteful?

从哪里看是这样的呢
Think of it from the point of view of an economist?

请用经济学家的眼光来看待这个问题
In this model,

在这个模型里面
the productivity of the workers doesn't change because of education,

教育并没有改变雇员的生产力