For millennia, thinkers have spent a lot of effort figuring out how an ideal “rational” agent would reason and act.
Typically, humans accept the norms and values of their culture, and then change those as their culture changes.
The key point, however, is that such a rational culture agent would not especially identify with or embrace the values of the culture in which it grew up, or now lives.
Cultural change driven by rational culture agents might plausibly improve at far faster rates that do cultures driven instead by dumb natural selection.
Natural selection should select for rational culture agents!

Rational Culture