No reason to be deliberate, well-informed or intelligent. We're at the mercy of the latest fads, propaganda. Value-free learning is impossible, since to delete any discussion of moral or intellectual values is, implicitly, to discount them.
Manipulation means that education is at the mercy of the best-organized political interest groups.
Political might makes right. If true values can only be known through special revelation, available only to some, then society cannot be a partnership of equals. We don't have to assume the non-existence of supernatural values. No conflict between morality and self-interest. We can study the adaptations that make up human nature through history, anthrolopogy, evolutionary psychology.