Le 02-déc.-06, à 06:11, Stathis Papaioannou a écrit :
> In addition to spectrum reversal type situations, where no change is
> noted from
> either 3rd or 1st person perspective (and therefore it doesn't really
> matter to anyone:
> as you say, it may be occurring all the time anyway and we would never
> know), there is
> the possibility that a change is noted from a 1st person perspective,
> but never reported.
> If you consider a practical research program to make artificial
> replacement brains, all the
> researchers can ever do is build a brain that behaves like the
> original. It may do this because
> it thinks like the original, or it may do it because it is a very good
> actor and is able to pretend
> that it thinks like the original. Those brains which somehow betray
> the fact that they are
> acting will be rejected, but the ones that never betray this fact will
> be accepted as true
> replacement brains when they are actually not. Millions of people
> might agree to have these
> replacement brains and no-one will ever know that they are committing
> suicide.
Well, in the case comp will be refuted (for example by predicting that
electrons weigh one ton, or by predicting non eliminable white rabbits)
, then everyone will be able to guess that those people were committing
suicide. The problem is that we will probably copy brain at some level
well before refuting comp, if ever.
The comp hyp. entails the existence of possible relative zombies, but
from the point of view of those who accept artificial brains, if they
survive, they will survive where the level has been correctly chosen. A
linguistic difficulty is that the "where" does not denote a place in a
universe, but many similar "instants" in many consistent histories.
Bruno
http://iridia.ulb.ac.be/~marchal/
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Received on Mon Dec 04 2006 - 08:07:57 PST