[Jedd]

> ... if free-seeking is such a powerful effect, then evolution must’ve intended our brains to work this way.

Evolution doesn't intend anything, of course. In the same way that evolution didn't intend us to get chubby because sugar is now cheap and abundant. (Actually that one may be more explainable in evolutionary terms.)

The free shipping example given in TFA doesn't reconcile easily with evolutionary pressures. Nor would it explain why two mature & well fed adults elected to risk injury over some surplus (if potentially tasty) kilojoules.

Money (and agriculture) are much too recent in our history -- say 9-12k BP -- for there to be any measurable or significant genetic adjustment.