[1cyril]

Try asking what came first, law or private property (the answer is private property): the implications of that realization are far more important compared to asking whether or not barter existed before money (it did). Also, you can frame it so that debt is conceived of as a type of barter; ie - i barter a debt of equivalent value I herewith owe you in exchange for this item you're offering to give to me as a consequence of that promise.

[lmm]

> Also, you can frame it so that debt is conceived of as a type of barter; ie - i barter a debt of equivalent value I herewith owe you in exchange for this item you're offering to give to me as a consequence of that promise.

The point is that "I'll give you this cow and you'll owe me one" predates "I'll give you this cow and you'll give me those chickens". To the extent that debt is a special type of barter, so is money; I think the distinction between exchanging something for a thing and exchanging something for a debt is worth making.