We have here an excellent item on the San people. It is extremely important. What is clear is that the San are our first peoples. They are at least 150,000 years in place and plausibly 250,000 years. Way more important is that all successor populations calved from this population. wonderfully they retain thge bulk of the original DNA which has been depleted everywhere else in every other population.
Their terrritorial spread was much large, but agriculturalists drove them ultimately into the Kalihari Desert.
The earth was populated by hunter gatherers calved of the San. These populations hten became distinctly different but retained the lifeway of hunter gatherer. This item makes it abundently clear that lifeway is astonishingly successful even by our standards and cerytainly needs to be cherished.
As far as we can tell agricultural man can be thought of as an upgrade that may well be DNA based. It certainly arose on the continental shelf post EDEN around 45000 BP. Post Flood ( Pleistocene Nonconformity ) or 12,950 BP was followed by the insertion of colonizing populations of agricultural man with the necessary toolkit around 10,000 BP worldwide.
Their rapidly expanding populations soon absorbed the majority of non agriculatural peoples and subsumed their DNA.
The San and Australian Abos are the last ancient holdouts, but first nations almost everywhere retain more of their hunter gatherer inclinations. They are also been subsumed.
What becomes abundently clear is that San populations need to be established worldwide as an integral part of terraforming Terra. They need common access to education and all that but they also need to be placed particularly where we do have desert biomes. The Sonora leaps to mind, but arid lands and wilds everywhere need a San population.
This may sound ambitious, but Terraforming Terra means doing the best for every square mile of land. An educated, plugged in San population is certainly best suited for all this in millions of square miloes of country.
No population is better suited, just as the cree do well in the Boreal forest. Populations do becomne aclimatized to their biome and we need to actively augment all that.