This approach seems to assume that there is one "correct" position that optimizes likelihood of survival. With biology, it's not like evolution approaches a "li

This approach seems to assume that there is one "correct" position that optimizes likelihood of survival. With biology, it's not like evolution approaches a "limit" of the perfect species, so the most valuable opinion for a decision making species is whatever is needed in the moment. In fact, we gain a lot of evolutionary advantage by outsourcing our opinions to other members of the species. Tolerance gives us mental capacity to worry about our immediate problems. Also consider that disagreement takes psychological, emotional, and sometimes physical resources to act on properly. Disagreement can be expensive and won't always pay off. So that's probably why humans are evolutionary predisposed to agreement.