[pja]

The idea isn’t that money came before barter - barter has always been around on the fringes of things. It’s that credit came before money & that credit tokens backed by a credible issuer turned out to be extremely useful as tokens of exchange & units of account. Hence it’s credit that evolves into money, not the things you might have bartered occasionally. Barter was for exchange with people you didn’t trust & didn’t have any kind of on-going relationship with & was therefore rare & fairly irrelevant economically. Anyone worth doing business with had some kind of credit relationship with your state anyway.