Re: Empirically Measuring Mutualism In Man

Perplexed in Peoria <jimmenegay@xxxxxxxxxxxxx> wrote or quoted:
> "Tim Tyler" <tim@xxxxxxxxxxx> wrote in message news:diq3mv$1it9$1@xxxxxxxxxxxxxxxxxxxxxx
> > Nick Kibourn <nkilbourn2002@xxxxxxxxxx> wrote or quoted:

> > > In a 2004 tournament Tit for Tat was beaten for the first time. A
> > > strategy created by the University of Southampton detected (by
> > > means of a pre-arranged pattern of seemingly random operations)
> > > whether its counterpart was another instance of the Southampton
> > > strategy. In cases where the counterpart is determined not to be
> > > using the Southampton strategy, it acts as a spoiler for the
> > > non-Southampton player. In cases where it is, the two
> > > form a master slave relationship, where the slave sacrifice's itself for the
> > > master by always cooperating and letting the master get away with never
> > > cooperating, which maximises the number of points for the master. In the
> > > competition where hundreds of agents are entered and compete against each
> > > other, Southampton entered 60 agents, guaranteeing that a few
> > > master agents gain incredibly high scores by sacrificing the rest
> > > of the slaves agents to the bottom of the score list.
> >
> > You would have to look a long way to find an analogous strategy in nature.
>
> Actually, no you wouldn't. Most metazoan cells are slaves with a
> miserable 'score'. But a few metazoan cells - the germ line cells -
> score high - primarily due to the sacrifices of the far more numerous
> slaves. [...]

There cooperation is beneficial through kin selection - while
prisoner dilemma tournaments are usually intending to provide
an environment where kin recognition clues are absent - in
order to explore the other ways in which cooperation can arise.

The Southampton strategy works through a sort of kin selection
(via kin recognition) as well; the analogy works quite well -
and the strategy is more widespread than I had guessed.
--
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