We try to respect the hunter that dominated the first 99.9% of the history of our species. If you had to kill a mammoth or do without supper, there was no time to draw up an organization chart, assign tasks, or delegate authority. Basically, the person who saw the mammoth from farthest away was the Official Sighter, the one who ran fastest was the Head Runner, whoever threw the most accurate spear was the Grand Marksman, and the person all others respected most and listened to was the Chief. That’s all there was to it. Distributing little charts to produce an appearance of order would have been a waste of time. It still is.