"And it is on top of this evopsych propensity to be gift-exchange animals--what Adam Smith called our "natural propensity to truck, barter, and exchange"--we have built our complex economic division of labor. We construct property and market exchange--what Adam Smith called our natural propensity "to truck, barter, and exchange" to set and regulate expectations of what the fair, non-cheater non-sap terms of gift-exchange over time are."
Truck barter and exchange
A natural human instinct
ie an enlightenment myth
A Creators near universal human endowment