You don't even necessarily have to move to find that, just move in time (granted, past a certain number of years that becomes impractical, given lifespans). It'

You don't even necessarily have to move to find that, just move in time (granted, past a certain number of years that becomes impractical, given lifespans). It's particularly striking here in Scandinavia, which has had relatively stable genetics over an extended period, yet extremely variable societies resulting, with different traits rewarded or discouraged at different times. It was (to generalize) once a warrior culture, then a hierarchical aristocratic culture, and is now a peaceful egalitarian culture, all with roughly the same genes involved.