http://en.wikipedia.org/wiki/Bushmen
Children had no duties besides to play, and leisure was very important to the Bushmen. They spent large amounts of time in conversation, joking, music, and sacred dances.
Traditionally the San were an egalitarian society.^[14] Although they did have hereditary chiefs, the chiefs' authority was limited and the bushmen instead made decisions among themselves, by consensus, ^[15] and the status of women was relatively equal
In addition, the San economy was a gift economy, based on giving each other gifts on a regular basis rather than on trading or purchasing goods and services.
The BBC series How Art Made the World compares San cave painting 200 years ago to Paleolithic European painting 14,000 years old. Because of their similarities, the San can help us understand the reasons for ancient cave paintings. Lewis Williams believes that their trance states (traveling to the spirit world) are directly related to the reasons people went deep into caves, experienced sensory deprivation, and painted their visions onto the cave walls.
Spencer Wells' 2003 book The Journey of Man—in connection with National Geographic's Genographic Project—discusses a genetic analysis of the San and asserts their blood contains the oldest genetic markers found on Earth, describing the Bushmen as a type of "genetic Adam". While the Bushmen's Y-chromosomal DNA haplogroup (type A) is one of the oldest, it is different than the Y-chromosome haplogroup that is the least common denominator for the rest of humanity (type BT). Therefore, the Bushmen likely represents the oldest existing population, but it is one divergent from the rest of humanity and not a sole common ancestor. Genetic markers present on the y chromosome are passed down through thousands of generations in a relatively pure form. The documentary continues to trace these markers throughout the world, demonstrating that all of humankind can be traced back to the African continent and that the San are the oldest, most genetically unadulterated, remnant of humankind's ancient ancestors. More recent analysis suggests that the San may have been merely isolated from other original ancestral groups and then rejoined at a later date, re-mixing the human gene pool.