I didn't watch the video yet but I have thoughts on this subject.

There is a counter-intuitive point I want to make and it is difficult on a forum like this. Technology advanced but social order declined to make the shift. It involved shared water sources. A social order like a tribe existed to share a natural water source and when technology allowed water to be distributed and people didn't have to meet face to face at the water source on a daily basis the social order declined because people lacking the social skills could survive.

Natural water sources are rare in most parts of the world and people settled their differences with stones and clubs. If you didn't treat the other people right at the water source you got axed to leave.