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From: hous0042@maroon.tc.umn.edu (Kevin C Houston)
Subject: Re: Kin Selection (was Re: Reproduction criterion)
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References: <Pine.3.89.9409021036.A12079-0100000@uk6x25> <347vdc$djr@bones.intellicorp.com>
Date: Sat, 3 Sep 1994 15:02:16 GMT
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In <347vdc$djr@bones.intellicorp.com> treitel@bones (Richard Treitel) writes:


>In article <Pine.3.89.9409021036.A12079-0100000@uk6x25>, dpdp19801@ggr.co.uk (Daniel Piponi) writes:
> [stuff about altruism]
>|> A gene for general altruism might have a hard time getting established 

>No kidding!  I expect that a gene which led to altruistic behaviour
>>>towards others who expressed the same gene<< would have a much
>better chance.  This may have something to do with racism ....

>I did (weeks ago) a simple-minded experiment with a-critters that had
>an evolvable propensity to share their food with other critters that
>also had this propensity: the amount shared was proportional to the
>sum of the two critters' sharing numbers.  Under good conditions
>(plentiful food, etc.) most of them maxed out on sharing; under harsh
>conditions, they became selfish.

>I didn't even try to simulate general altruism.

>It really was a simple simulation.  *Do* try this at home.

>-- Richard

Isn't this the old prisoner's dilemma problem? and I was wondering what
happens to Tit-for-tat if you allow the a-life critters to broadcast their
intentions (along with lying). i.e. critter one could say "I intend to
co-operate on the next turn" the other critters could then check the truth
of this statement on the next turn. etc. 
	Just A-thought :-)
	Kevin

