about diminishing returns to intensification of labor.

那就是随着劳动力的增加边际效用递减
The constants in this story are land and capital.

这个例子中土地和资本是不变的
We're not adding new land, we're not adding new capital.

我们没有新增任何土地和资本
We're just adding new workers to an existing quantity of land.

我们只是在现有土地上增加了工人的数量
The intuition that guided Malthus was that

指引马尔萨斯的直观感受就是
as you intensified labor you got diminishing total returns,

随着劳动力的增加总回报在递减
the red arc, which implied,

也就是这个红色的弧线
by perfectly simple logic, a diminishing rate of

还揭示了一个简单的逻辑
production for each worker.

也就是每个工人的边界效率递减
That intuition is really, that along with the iron law of wages,

这个直觉感受同工资铁律一样
is at the middle of Malthus' thinking.

是马尔萨斯的思想核心
On the cultural--who here went to a high school

在座哪位同学的高中