In the thread Why this is still Amerikkka, there is a lively discussion of the extent to which many sub-Saharan countries are still economically undeveloped as a result of the genes of their inhabitants, the extent to which those genes are responsible for agriculture and sedantry animal husbandry not having developed independently there, and other nonsenses. I think it would be useful to have a discussion of the general topic of how Homo sapiens came to be socially organised into permanent settlements, how agriculture began, and what the factors behind the development of sedentary animal husbandry were. First though, some of the existing posts. This is where it seems to have begun: Then it rolled along ... Then it went off into the role of intelligence, and the rise of technology; these are topics for different threads. More contributions next.