The Believing Brain: From Ghosts and Gods to Politics and Conspiracies---How We Construct Beliefs and Reinforce Them as Truths

by Michael Shermer

Around five thousand to seven thousand years ago, as bands and tribes began to coalesce into chiefdoms and states, government and religion co-evolved as social institutions to codify moral behaviors into ethical principles and legal rules, and God became the ultimate enforcer of the rules.6 In the small populations of hunter-gatherer bands and tribes with a few dozen to a couple of hundred members, informal means of behavior control and social cohesion could be employed by capitalizing on the moral emotions, such as shaming someone through guilt for violating a social norm, or even excommunicating violators from the group. But when populations grew into the tens and hundreds of thousands, and eventually into millions of people, such informal means of enforcing the rules of society broke down because free riders and norm violators could more readily get away with cheating in large groups; something more formal was needed. This is one vital role that religion plays, such that even if violators think that they got away with a violation, believing that there is an invisible intentional agent who sees all and knows all and judges all can be a powerful deterrent of sin.