Sublime

Darwin believed that morality was an adaptation that evolved by natural selection operating at the individual level and at the group level.

Influence, Robert Cialdini explains, “When human beings make a choice or take a stand, they have an incredibly powerful compulsion to remain consistent with those commitments.”2

Babies feel but don’t reason (and have the beginnings of morality).

So Dunbar proposed a novel idea: the size of a species’ brain determines the optimal size of their social groups. Maintaining relationships, argued Dunbar, requires brain power. More relationships require more neurons. Extrapolating his straight line from primate brains to human brains, he found that the optimal human group size, if this hypothesis

employees have trouble committing to a decision when they perceive the process as unfair.