Good point. However, if you can see it in all hominids, it's probably legit. ie. strength in numbers + defensible positions vs. predators, preference for sweepi

Good point. However, if you can see it in all hominids, it's probably legit. ie. strength in numbers + defensible positions vs. predators, preference for sweeping open views vs. predators, etc. Ultimately moving rocks in an agricultural society can begin with the simple requirements to til the fields more efficiently. What starts as a pile may become the symbol of the legitimacy of the dynasty...