I remember Richard Ngo making the suggestion that the science of the interactions between individual humans is going to end up being similar to economics:

The main claim was that human interaction can be modeled as ongoing microtransactions of status.

E.g. take boasting: it's a sort of staking/investment/prediction in the status of a thing associated with a person, the harder the boast the bigger the "staking". Others can either join in (add stake) or in a grou you can then have a KBC-ish thin