“Human beings have stopped evolving after becoming the only species to “put halt to natural selection of its own free will”, Sir David Attenborough has said, as he predicts the “cultural evolution” of the future.” – From http://www.telegraph.co.uk/science/evolution/10297124/Sir-David-Attenborough-Humans-have-stopped-evolving.html. The article is a great and thought provoking piece. According to Sir David Attenborough, a prominent English bio-anthropologist, humans are no longer evolving, in biological terms. Attenborough argues that humans are no longer bounded by the laws and constraints of evolution due to historically low infant mortality. Humans are now raising over 99% of the children born. We simply don’t need natural selection anymore. However, Attenborough also argues our evolution is now a cultural evolution. We, as a species, become more of a technologically advanced civilization by the day and we are becoming more aware of our actions and how they affect ourselves, others, and the natural world.
That being said, how does game theory and evolutionary stable strategies play into this? It seems the stable strategy was also the Nash equilibrium. Cooperating with our fellow man is what drives our prosperity and this strategy seems protected from outside, alternative strategies. However, if Attenborough is correct, then applying the concepts of Evolutionary Stable Strategies needs a bit of adjustment before applying it to humans. There is no reason to assume stable strategies can’t applied to humans anymore too; Attenborough argues humans are still evolving, just culturally and not in the biological or Darwinian sense.
We know there are human cultures (and many subcultures) that is bounded and set by commonly accepted rules, notions, tastes, beliefs, etc (although this is a very brutish definition). Then, we can now think of these boundaries and rules are now the driving force of human evolution. The Evolutionary Stable Strategy for humans is our culture. People who identify with the prevailing culture reproduce and those whom do not identify simply do not reproduce. More so, we can also label an alternative strategy as a new and emerging idea or belief or a belief or ideal held by an outside or splinter group not held or adopted by the people of the prevailing culture.