Our view of the San is partly informed by some basic anthropological and linguistic research, mostly applying to the Khoisan, which is worth outlining to set the scene.
The first fossil records that we have of our human ancestors date back to at least about 60,000 years ago in East Africa. These are likely to have been the ancestors of everyone living today.
Archaeological finds from parts of the Kalahari show that human beings have lived here for at least 40,000 years. These are generally agreed to have been the ancestors of the modern Khoisan peoples living in Botswana today. (The various peoples of the Khoi and the San are known collectively as the Khoisan. All have relatively light golden brown skin, almond shaped eyes and high cheekbones. Their stature is generally small and slight, and they are now found across southern Africa.)
Linguists have grouped all the world's languages into around 20 linguistic families. Of these, four are very different from the rest. All these four are African families – and they include the Khoisan and the Niger-Congo (Bantu) languages.
This is amongst the evidence that has led linguists to believe that human language evolved in Africa, and further analysis has suggested that this was probably amongst the ancestors of the Khoisan.
The Khoisan languages are distinguished by their wide repertoire of clicking sounds. Don't mistake these for simple: they are very sophisticated. It was observed by Dunbar that, 'From the phonetic point of view these [the Khoisan languages] are the world's most complex languages. To speak one of them fluently is to exploit human phonetic ability to the full.'
At some point the Khoisan languages diverged from a common ancestor, and today three distinct groups exist: the northern, central and southern groups. Languages gradually evolve and change as different groups of people split up and move to new areas, isolated from their old contacts. Thus the evolution of each language is specific to each group, and reflected in the classifications.
According to Michael Main, the northern group are San and today they live west of the Okavango and north of Ghanzi, with representatives found as far afield as Angola. The southern group are also San, who live in the area between Kang and Bokspits in Botswana. The central group is Khoe, living in central Botswana, and extending north to the eastern Okavango and Kasane, and west into Namibia, where they are known as the Nama.
Each of these three Khoisan language groups has many dialects. These have some similarities, but they are not closely related, and some are different to the point where there is no mutual understanding. Certain dialects are so restricted that only a small family group speaks them; it was reported recently that one San language died out completely with the death of the last speaker.
This huge number of dialects, and variation in languages, reflects the relative isolation of the various speakers, most of whom now live in small family groups as the Kalahari's arid environment cannot sustain large groups of people living together in one place as hunter-gatherers.
Cultural sensitivity and language
Cultural sensitivity isn't something that a guidebook can teach you, though reading the section on cultural guidelines may help. Being sensitive to the results of your actions and attitudes on others is especially important in this area.
The San are often a humble people, who regard arrogance as a vice. It is normal for them to be self-deprecating amongst themselves, to make sure that everyone is valued and nobody becomes too proud. So the less you are perceived as a loud, arrogant foreigner, the better.
Very few foreigners can pick up much of the local language without living here for a long time. (Readers may already realise that spellings of the same word can vary greatly.) However, if you want to try to pronounce the words then there are four main clicks to master. In the well-documented Ju/'hoansi language, these are:
/ a dental click, a sucking sound, made by putting the tongue just behind the front teeth.
// a clucking sound, like that used in English to urge on a horse.
! a sharp popping sound, like a cork coming out of a bottle, made by pulling the tongue down quickly from the roof of the mouth.
( a soft popping sound, made by putting your tongue just behind the ridge back of the front teeth (this is usually the hardest).
Most genetically normal men have an X- and a Y-chromosome, whilst women have two X-chromosomes. Unlike the other 22 pairs of (non-sex) chromosomes that each human has, there is no opportunity for the Y-chromosome to 'swap' or 'share' its DNA with any other chromosome. Thus all the information in a man's Y chromosome will usually be passed on, without change, to all of his sons.
However, very rarely a single 'letter' in the Y-chromosome will be altered as it's being passed on, thus causing a permanent change in the chromosome's genetic sequence. This will then be the start of a new lineage of slightly different Y-chromosomes, which will be inherited by all future male descendants.
In November 2000, Professor Ronald Davis and a team of Stanford researchers claimed to have traced back this lineage to a single individual man, and that a small group of East Africans (Sudanese and Ethiopians) and Khoisan, are the closest present-day relatives of this original man. That is, their genetic make-up is closest to his. (It's a scientific 'proof' of the biblical Adam, if you like.)
This is still a very contentious finding, with subsequent researchers suggesting at least ten original male sources ('Adams') – and so although interesting, the jury remains out on the precise details of all these findings. If you're interested in the latest on this, then you'll find a lot about this on the web – start searching with keywords: 'Khoisan Y chromosome.'