On 17 Jan 2014, at 01:34, Stathis Papaioannou wrote:

On 17 January 2014 01:17, Jason Resch <jasonre...@gmail.com> wrote:


On Jan 16, 2014, at 2:11 AM, Stathis Papaioannou <stath...@gmail.com> wrote:

On 16 January 2014 16:26, Jason Resch <jasonre...@gmail.com> wrote:

The computational metaphor in the sense of the brain works like the Intel CPU inside the box on your desk is clearly misleading, but the sense that
a
computer can in theory do everything your brain can do is almost
certainly
correct. It is not that the brain is like a computer, but rather, that a computer can be like almost anything, including your brain or body, or
entire planet and all the people on it.

Jason


I think neuroscientists have, over decades, used the computational
metaphor in too literal a way. It is obviously not true that the brain
is a digital computer, just as it is not true that the weather is a
digital computer. But a digital computer can simulate the behaviour of
any physical process in the universe (if physics is computable),
including the behaviour of weather or the human brain. That means
that, at least, it would be possible to make a philosophical zombie
using a computer.


How does this follow? Personally I don't find the notion that philosophical
zombies make logical sense at all.

I meant that if the physics of the brain is computable it follows as a
straighforward deduction that it would *at least* be possible to make
a philosophical zombie. It is then a further argument to show that it
would not be a zombie but a conscious being.

Right. You don't need the assumption that the physics of the brain is computable. If nature can do a non computable brain and process it, we might find in nature a way to imititate in a "natural" machine, so that you can say yes to some non-comp doctor.
Your own argument work for your quite general functionalism!

p-zombie are logically conceivable, and I would say, some already exist in some local sense, like sexual dolls in Japan, or fake policeman on the roads.

With comp, the notion of zombie does not make sense, because, by definition consciousness will supervene on a computation done at the right level.

Zombie are logically conceivable, like comp can be logically conceived to be false.

Bruno





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Stathis Papaioannou

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