A theory of how evolved psychology underpins attitudes towards societal economics must go beyond exchanges and averages.

We applaud Boyer & Petersen for the advancement of an ultimate explanation of the dynamics of folk-economic beliefs and the political actions linked to them. To our mind, however, key inference systems regulating societal interaction and resource distribution evolved for more core relations than those of proportionate exchange, and situational factors are not the only constraints on how such systems produce economic beliefs.