On 08 Aug 2011, at 03:03, Craig Weinberg wrote:

Interesting article:

Residents of the brain: Scientists turn up startling diversity among
nerve cells
http://www.sciencenews.org/view/feature/id/332400/title/Residents_of_the_brain_

"No two cells are the same. Zoom in, and the brain’s wrinkly, pinkish-
gray exterior becomes a motley collection of billions of cells, each
with personalized quirks and idiosyncrasies."

"New results suggest, for instance, that a population of nerve cells
in which individual responses to an electrical poke differ can process
more information than a group in which responses are the same. "

"in addition to losing neurons, the brain would lose diversity, a
deficit that could usher in even more damage."

I would say this tends to support my view that the idea of replacement
neurons or normative behavior modeling is likely to be a dead end as
far as functionalism is concerned. It's more appropriate to consider
your brain a civilization of individual organisms (only some of which
are the conscious 'I')

You mean some neuron are me? That is worst that the "grandmother neuron" idea.



rather than a powerful computer executing
complicated instructions.

This is just a question of making the comp level lower, and has no incidence on the consequences of comp. The molecules themselves have no individual differences, and in case they have, again, this would only put the level of substitution lower. No machines can know-for-sure its own substitution level, and the obligation to reduce physics to the arithmetical biology and theology of numbers follows only from the *existence* of a level, not on the choice of such a level.

Bruno


http://iridia.ulb.ac.be/~marchal/



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