On 23/04/2017 10:01 am, Quentin Anciaux wrote:
If everything reduce to matter then the tools you use to prove and
demonstrate are *false*... The truth of them are inconsistent if only
real is physically realised computations... Even the notion of
realised computation proved by definition that computation is not a
physical notion.
Existence is not a matter of definition. Rules of inference are
abstract, not concrete, but abstractions do not contradict the concrete.
Bruce
Quentin
Le 23 avr. 2017 01:34, "Bruce Kellett" <[email protected]
<mailto:[email protected]>> a écrit :
On 23/04/2017 9:03 am, Quentin Anciaux wrote:
The contradiction is in requiring computation which is a
mathematical notion, if physicalism is true, so everything reduce
to matter, computationalism is false by definition, as
computation as such is not a physical notion.
That is just word salad. A description of a physical process is
not, in itself, physical (unless it is written down or stored
physically). Similarly, computation is not physical in so far as
it is an abstract description of what a computer does. But the
computer is physical, and the computation does not exist absent
the computer.
It seems that you have merely defined computationalism as the
thesis that physicalism is false, and then claimed that the
assumption of computationalism contradicts physicalism. But that
is logic chopping of the basest kind.
Bruno, at least, starts from the "Yes, doctor" idea, which is not,
of itself, inconsistent with physicalism, and then attempts to
argue that the notion of abstract computations (platonia) renders
the physical otiose. There is still no contradiction. The best
that Bruno can achieve is something that seems absurd to him. But
that is merely a contradiction with his instinctive notions of
what is reasonable -- it is not a demonstrated logical contradiction.
Bruce
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