Re: History and Goals (for TE)

Glenn R. Morton (
Sat, 20 Jun 1998 16:56:04 -0500

At 12:42 PM 6/20/98 -0500, Craig Rusbult wrote:

>* 22. GLENN:
>> The tracks may not be
>>random, the mutations are though. In a 3 dimensional cavern system, if you
>>are in a cavern of 16 feet diameter by 100 feet long with one small opening
>>at each end, you can only move 16 feet up or sideways before motion becomes
>>impossible. If you are moving in a random fashion, you will bump into the
>>wall. You path is only random within the cavern itself, not in the entire
>>limestone bed. Eventually your random path will take you to one of the
>>small exits. Once in that exit you are constrained to either move down the
>>exit into the next cavern or back into the one you left. Movement is
>>random, not the cavern! ...
>> in the above analogy, the walls represent the genomes that die! One
>>move in those directions so since the population can grow to fill the
>>cavern, they can't occupy niches inside the "dna phase space cavern
>>walls". But as the population fills the phase space of the cavern, some
>>will eventually lie near the exits and if isolated, will speciate (go into
>>the next cavern).
> [ CR: This is a clever, interesting analogy; do you know how Gould and
>Dennett, respectively (see my earlier post), would evaluate its technical
>plausibility? Just how convergent or divergent is evolutionary history? ]

Largely I think this is close to what the advocates of chaos theory applied
to biology like Stuart Kaufman would hold. However they treat Kaufman is
probably how they would evaluate this.


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