The Origins of Hierarchy in Our Society

If these social systems were just random choice, or about some kind of mysterious internal cultural logic, well then why is it always men who dominate into it in the summer? Why doesn't any culture ever have a different system every season or every year? The reason is because in different seasons, different environmental and economic conditions which mostly repeat every single year, change the balance of pow s of various actors. And they tell us that if we are right, and if human beings really have spent most of the last forty thousand years so moving back and forth between different forms of social organization,. building up hierarchies and then dismantling them again.