That's only true if you accept it. I do not. Somewhere along the line in our history, some smart person gave up on trying to teach his fellow tribespeople the way after he or she figured out their stupidity made them easy to manipulate. This decision was probably originally made under pressure from the environment; he or she needed their people to do certain things, but they wouldn't listen because the other elder was dead or something like that. At the time, it worked well enough... now the precedent is an evolutionary trap.