I forgot to mention something about the beginning of agriculturalism yesterday(no doute there's plenty more that I havn't thought of!).
The jump from hunter gatherors to agriculture seems to be an almost impossible bridge to leap. Yes, our ancestors did! Nobody knows how they willingling decided to try to just stop hunting and gathering and just start farming. Like I've said, the knowledge gap is too large. One thing seems to me for sure; the ability to jump this knowledge gap to farming was human imagination.You'll probably have to watch maybe midway to get to his beginnings of civilization. Also, if you want to, you could start from the beginning and watch his points about humanity's dependence on technology. He also happens to start around the Twin towers brought down in a terrorist attack.