On 27 Mar 2014, at 15:55, smi...@zonnet.nl wrote:
Citeren Stathis Papaioannou <stath...@gmail.com>:
On 27 March 2014 19:11, Bruno Marchal <marc...@ulb.ac.be> wrote:
On 26 Mar 2014, at 22:30, Stathis Papaioannou wrote:
On Thursday, March 27, 2014, Russell Standish
<li...@hpcoders.com.au>
wrote:
On Wed, Mar 26, 2014 at 05:06:46PM +1100, Stathis Papaioannou
wrote:
>
> The engineering tolerance of the brain must be finite (and far
higher
than the Planck level) if we are to survive from moment to
moment, and that
implies there are only a finite number of possible brains and
hence mental
states.
>
Steady on, I don't think it does that at all, unless you
constrain the
physical world to be bounded somehow in both space and time.
I think you were just trying to say that the space of brains (and
mental states) is discrete, something I could agree with.
Unless you allow brains to grow infinitely big, there are only a
finite
number of possible brains even in an infinite universe.
Assuming comp. If the brain is defined by its "material" quantum
state,
and assuming electron position is a continuous observable, then we
can have
an infinity of brains, even when limiting their size.
Is electron position a continuous observable? Even if it is and
there are
an infinity of brains, why should that result in an infinity of
minds? It
would seem unlikely that brains would evolve so that an arbitrarily
small
change in the position of an electron would cause a change in
consciousness, and we know that even gross changes in the brain, as
occur
in stroke or head injury, sometimes have remarkably little effect.
--
Stathis Papaioannou
Yes, there are only a finite number of quantum states that even the
entire visible part of the universe can be in.
In which theory? I mean, in which QM?
I think that even an electron in an atom of hydrogen can be in
infinitely many quantum states, in non GR version of QM. I guess I
miss something here.
Bruno
The different mental states I can find myself in can be regarded as
different measurement outcomes.
Saibal
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