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Crossing the boundary between natural and human sciences |
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The talking snake
H
For as long as humans have existed - and long before that - poisonous snakes have been an important cause of death. In almost all cultures snakes play an important role. Sometimes they are seen as gods or messengers of gods or of the devil, sometimes as demons. In the story of the Garden of Eden in the Bible it’s a talking snake which seduces Eva to evil. This has made the snake forever the symbol of the Fall in Jewish and later also in the Christian culture. Similar images are to be found in other cultures. Humans (and chimpanzees) that have never seen a snake are instinctively afraid of them. In dreams snakes often play a role. How far are the genes (‘instinct’) responsible for our fear of snakes and how far is it a cultural phenomenon? Has natural selection happened to humans who were sufficiently afraid of snakes or to cultures where this fear was cultivated?
Don’t draw
the conclusion from this that there is a ‘gene for fear of snakes’. That there
is a genetic basis for behaviour has become clear, but in what way genes
influence behaviour is not clear.
Memes
That
biological species have developed through natural selection of spontaneously
arisen variables has been proven sufficiently. Researchers are becoming more
convinced that comparable processes also happen to ‘memes’ (derived from
‘memory’, in analogy to genes). Memes are components of our cultures, for
example ideas, melodies, and inventions. These can also arise spontaneously and
soon disappear, or expand very quickly. Our present culture is built up out of
successful memes, which we have inherited from our ancestors. The less
successful have disappeared and been forgotten. Meme evolution is faster than
biological evolution, but is not totally independent of it. That human culture in some or other way is based on the way we are structured also appears from the ‘experiment’ of the New World. When the first people landed in America via Alaska, they were still nomadic hunters and gatherers who subsequently spread themselves over the whole western hemisphere and adjusted themselves to the local environment. When the Europeans after Columbus made contact with the different cultures present there, it appeared that highly developed cultures existed which were on the one hand strange but on the other possessed many recognisable elements: grain (maize) and vegetables were raised, earthenware pottery, metallic adornments and weapons were manufactured, people clothed themselves in woven materials and there was an hereditary nobility; kings and priests ruled the lives of ordinary people. Archaeological research in our times confirms this. It appears that there is a basic pattern in our brains by means of which people have the tendency to experience certain social and technical developments.
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