Re: The Brain


"casey" <jgkjcasey@xxxxxxxxxxxx> wrote in message
news:fae9e769-e3d8-49a5-a552-1a6947345549@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
<snip>

JC:I assume you are thinking in terms of how evolution
created all the different life forms from natural
selection via random changes to dna sequences?

Alpha: NS did not create anything! It is merely the change in a population,
statistically speaking. Artifacts first have to be created, as you note, by
some other mechanism, *then* naturall select can act on that artifact.




JC: If you look at evolution the components of biological systems
were built up in working stages and I would suggest learning
also takes place in *working* stages.

Alpha: And yet the record is clear in this area, grand experiments in new
artifact generation occurred not in working stages (Suggesting gradualism) ,
but all at once (punctuated equilibria etc.)






JC: But does it really learn that a particular complex sequence
of behaviors will work? Isn't it more a case of learning
what strategies and rules will work? It needs to be able to
generate moves without knowing the actual sequence that will
follow for each game may be completely unique.

Alpha: And that is not how dynamical systems that are chaotic work.
Attractors are goverend by many parameters including hormonal milieu,
neurotransmitter milieu and so forth.




JC: Even so, I do favor the bottom up approach to ultimately
understanding the human brain.

So where is the "bottom"?



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