The way I see it we've got barter: Something you want for something I want. And we've got symbolic: Something that represents what we both want (Currency, rewa

The way I see it we've got barter: Something you want for something I want. And we've got symbolic: Something that represents what we both want (Currency, rewards points, gift cards). Even those giant stone wheels were a form of currency. What gets weirder than stone coins? Plasma pennies?