On Thursday, August 27, 2015, meekerdb <[email protected]> wrote: > > > > -------- Forwarded Message -------- Subject: Re: If the universe is > computational, what is the computing platform? What are the options? Date: > Wed, 26 Aug 2015 17:32:37 +1000 From: Stathis Papaioannou > <[email protected]> <javascript:_e(%7B%7D,'cvml','[email protected]');> > Reply-To: > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');> To: > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');> > <[email protected]> > <javascript:_e(%7B%7D,'cvml','[email protected]');> > > > > On 26 August 2015 at 17:21, Peter Sas <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> Hi guys and girls, >> >> I'm sure this question has already come up many times before, but it's an >> important one, so I guess it can't do any harm to go over it again. >> >> If the universe is thoroughly computational, what are the computations >> 'running' on? What I especially like to know is what options are discussed >> in digital physics. So far I have encountered only the following >> possibilities: >> >> (1) Mathematical platonism: all natural numbers, and all mappings between >> them (i.e. all algorithms), simply exist in 'Plato's heaven', including >> those algorithms that compute our universe. The simple non-spatiotemporal >> existence of those algorithms is enough to 'instantiate' a spatiotemporal >> world. This type of solution can be found in Tipler, Tegmark and our own >> Bruno Marchal. >> > > I thought Tipler's theory is that there will be an actual physical > computer that will be able to do all possible computations as the Universe > collapses - although since he came up with the idea it has been shown that > the Universe won't collapse in the required way. > > >> Major problem: the hard problem of consciousness. >> > > Why is the Hard Problem of Consciousness a problem in the computerless > computation scenario? > > Because then it's not clear why there should be the connection between > brains and consciousness. If they are both just computations, why do they > have this tight causal relation. Why can't the consciousness be computed > independently. If it can't, if it depends on the brain being also computer > - then you're back to the "hard problem". >
Yes; I meant that it's no more or less a problem if there is no physical computer. -- Stathis Papaioannou -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
