I'm not claiming any structure at all. All I did was give an example of two different tribes. One that was successful and another that tested the idea of having social workers like carpenters and doctors and lawyers and teachers which was unsuccessful. Illustrating just how absurd your original description of how tribes worked actually was.
I imagine every tribe was probably a little different as to how they survived depending upon where they lived and how many people they needed to support. Some tribes were more successful and some less so. There was no "best medicine man" or "best conflict resolver". Give me a break.
