Measure comments on The Point of Trade

[Measure]

Here are at least two things that add to gains from trade:

Shared Equipment:
If you have to independently produce pickaxes, trucks, rails, a smeltery, etc. before you are able to spend your N units of human effort to mine the N units of iron you need, you can gain by purchasing the (right to use the) mine and equipment someone else already produced and isn’t using right now/​any more.

and

Intellectual Property:
Imagine you have to additionally find where to mine for iron, invent a shovel, and also independently discover that there even is such a thing as iron and that it is useful for whatever purpose.

[itaibn0]

How do you make spoiler tags?

[Measure]

From the FAQ page:

In the Draft.js editor type >! on a new line, then press space, then a spoiler box should appear

In the Markdown editor, surround your text with :::spoiler at the beginning, and ::: at the end.