Earlier quoted context omitted.
Money develops out of market exchanges. Money was not used for its own sake initially, but it becomes widely used as money as a result of innumerable transactions within the economy This also doesn't appear to be true: see David Graeber's book Debt: The First Five Thousand Years for his descriptions of how money actually emerges from religious ceremonies and temples, not barter (as most econ books have it) or "market…
I wouldn't trust Graeber, as he is frequently wrong about easily verifiable facts in such a way that it supports his world view. There's no reason to trust a liar when he tries to tell you something you don't know about. My favorite Graeberism is when he describes the founding of Apple: > Apple Computers is a famous example: it was founded by (mostly Republican) computer engineers who broke from IBM in Silicon Valley…
As I said before: Graeber's premise is interesting, but he's definitely tainted goods from here on out, and I'll have to verify any of his claims/statements before using them elsewhere.
Pity.