SWM wrote:
>Joseph Polanik wrote:
>>to put this point in terms of the duality of measurable and
>>experiencable phenomena: a measurable phenomenon can not be identical
>>to an experiencable phenomenon that it causes.
>Here we have ambiguities with regard to "measurable"
. We certainly can
>measure responses in conscious organisms and, if Dehaene is right, we
>will even be able to measure the occurrence of mental images in brains
>-- even without the reporting of the organism that has the brain.
>It seems to me you are collapsing "measureable" into observable but
>even on that basis what I have described is, indeed, observable.
I'm not collapsing measurable into observable. I am distinguishing
measurable from experiencable.
you are creating an ambiguity here by using 'observable' as a synonym
for two words which have meanings that are different from each other,
'measurable' and 'experiencable'
.
someone might measure REM sleep signals and infer that the subject is
dreaming. that doesn't count as observing the dream. that only counts as
measuring a psychophysical correlate of dreaming.
>I have already noted that, as with most words we play the language game
>with, there are many different kinds of identity, from the logical to
>the identity of twins to that of like-specked artifacts to that of
>different aspects of the same thing. I am on record as saying my notion
>of brains causing consciousness comes down saying this is about
>different aspects of the same thing (as in two sides of the same coin
>or water molecules, which operate in a certain way, will manifest on
>one level of observation as wetness).
>Note that my point is that it is the performance of certain functions
>by physical processes that are the coin on this analogy. The two sides
>of the coin are the observable evidences of the processes in operation
>and the occurrence of subjectiveness. On this view the brain is the
>platform on which the processes are run. But neither the brain nor the
>processes themselves are the consciousness (the subjectness)
. THAT is
>an aspect, on a certain level of observation, of the functions being
>performed. On such a view, any processes on any platform that can do
>the same things (perform the same functions) could generate
>subjectness. But it doesn't follow that any two instances of
>subjectness (of consciousness) would be interchangeable except insofar
>as they are capable of the same functionalities (of accomplishing the
>same tasks).
here is the ambiguity in operation. the coin doesn't represent real
identity or even causality. the only scientific fact it could possibly
represent is the correlation between measurable phenomena and
experiencable phenomena.
philosophers can't prove that they are identical based on scientific
research because scientists are committed to looking for causal
relations between measurable phenomena and experiencable phenomena.
whatever evidence of causality they find is evidence of non-identity.
yes, you could reject the definition of identity in favor of a
definition that means 'identity and/or non-identity' but that doesn't
make the coin metaphor mean something contrary to scientific research.
Joe
--
Nothing Unreal is Self-Aware
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