And all that they can ask is
"Why is so much made kid?"
that’s what the trade is
that’s what the point of the trade is
https://www.lesswrong.com/posts/6KzFwcDy7hsCkzJKY/the-point-of-trade
The post feels very ad-hoc, though, and that rears its head at the end where after the fact Yudkowsky thinks of two additional things. I was expecting a punchline that was like "and anything else you could name is secretly one of the things you've already named...
...because if you trace the supply line the only possible places it could be different between people are there, there and there in ways A, B, C". I've never read an economics textbook so I don't know if that's possible or what specifically that would look like