Q,
Racism, bigotry, oppression, and ignorance have other basic roots far outside of the scope of religion;
If a worldview has always been clouded with cult thinking, how can any decision be outside the scope of that cult? If you can provide examples, we can look at what might affect those other roots.
however, the beak anology does work if we consider that belief allows people to make quick judgments in the absence of incomplete information and gains the resources and support of others whom share the same belief. In other words, the human propensity to believe has changed due to its surivival advantages (just as a Finch beak did the same).
The beak analogy was used to demonstrate how quickly and observably these changes can occur.
Survival should produce through evolution a natural altruistic worldview that supports cooperation, which attempts to benefit all parties concerned. Faith in mankind would take precedence over faith in gods.
But, it IS the faith in gods and not the faith in mankind which governs those whom share the same beliefs. A worldview based on this premise hasn't much of an advantage if it cannot sustain survival.