On Sat, Aug 26, 2006 at 01:57:07PM -0700, Brent Meeker wrote:
> >What are the ingredients of a conscious computer ?  Perhaps 
> > one essential component is a central processing unit that depends on 
> > quantum 
> > randomness to arrive at a decision when other factors balance out.
> I don't think there's any reason to suppoose quantum randomness plays a role 
> in human 
> consciousness - and there are some reasons to think it doesn't, e.g. see 
> Tegmarks 
> paper.  There is plenty of environmental "noise" to prevent Buridan's ass 
> from starving.
> Brent Meeker

Tegmark's paper looked specifically at quantum computing as a model
for consciousness (ie Penrose's suggestion), and the requirements of
quantum coherent states. He didn't look at quantum noise effects.

There is evidence in the form of brains being structured to behave
chaotically (in the classical deterministic chaos sense) (see Walter
Freeman's work). This has the effect of amplifying randomness at the
molecular (thermal) level, which ultimately depends on quantum
randomness, to the macroscopic brain level.

This may be coincidental, but I think not. Your PC is engineered to
avoid the effects of chaos to prevent this very thing occurring. Why
wouldn't nature do the same thing unless it were deliberately trying
to exploit randomness?


*PS: A number of people ask me about the attachment to my email, which
is of type "application/pgp-signature". Don't worry, it is not a
virus. It is an electronic signature, that may be used to verify this
email came from me if you have PGP or GPG installed. Otherwise, you
may safely ignore this attachment.

A/Prof Russell Standish                  Phone 8308 3119 (mobile)
Mathematics                                    0425 253119 (")
UNSW SYDNEY 2052                         [EMAIL PROTECTED]             
Australia                                http://parallel.hpc.unsw.edu.au/rks
            International prefix  +612, Interstate prefix 02

You received this message because you are subscribed to the Google Groups 
"Everything List" group.
To post to this group, send email to everything-list@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 

Reply via email to