[ExI] Group Selection Advances

hkhenson hkhenson at rogers.com
Fri May 1 21:00:06 UTC 2009

At 09:13 PM 4/30/2009, Lee quoted from:

>"The problem with group selection is that for a whole group to get a 
>single trait, it must spread through the whole group first by 
>regular evolution. But, as J. L. Mackie suggested, when there are 
>many different groups, each with a different Evolutionarily Stable 
>Strategy (ESS), there is selection between the different ESSs, since 
>some are worse than others[20]. For example, a group where altruism 
>arose would outcompete a group where every creature acted in its own interest."

The last sentence is not true, because creatures *DO NOT* act in 
their own self interest.  They act in the self interest of their 
genes.  Most of the time that *looks* like self interest.  Then along 
comes a situation where it is clear that the interest of the creature 
and it's genes have diverged--and the genes dictate the response.

If you have been listening to me in the last few years at all, you 
can plug in the common examples I have used.  If you have not and 
don't want to look in the archives, ask.


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