Fw: Is the universe computable?

2003-11-04 Thread Frank
I submit this link to Shmidhuber's second paper, which discusses various probability distributions on the set of computable Universes. ftp://ftp.idsia.ch/pub/juergen/toesv2.pdf Sorry if this has been already covered. I'm not a mathematician, and I'm not entirely "into" hardcore computer scien

Re: Is the universe computable?

2003-11-04 Thread Frank
I submit this link to Shmidhuber's second paper, which discusses various probability distributions on the set of computable Universes. ftp://ftp.idsia.ch/pub/juergen/toesv2.pdf Sorry if this has been already covered. I'm not a mathematician, and I'm not entirely "into" hardcore computer science.

Re: Is the universe computable?

2003-11-04 Thread Russell Standish
This line of argument was discussed on the everything-list a few years ago. From memory, the conclusion was that QM uncertainty was unlikely to be due this extra noise, but I'm not a hundred percent certain of this. The best reference in the archives I could find of this discussion was: http://www

RE: Is the universe computable?

2003-11-04 Thread David Barrett-Lennard
Russell, >My personally preferred solution to this problem is described in my >paper "Why Occam's Razor". I agree that extra bits in the "program" would tend to appear as noise rather than some miracle like a fire breathing dragon. Is it then assumed that the magnitude of this noise is unlikely

Fwd: Here's how to u-n-s-u-b-s-c-r-i-b-e

2003-11-04 Thread Wei Dai
Apparenly the mailing list software does not like "unsubscribe" in the subject field. It thinks you're mistakenly sending an unsubscribe request to the list address instead of the request address. Thanks for pointing out the typo on the web page. I've fixed it now. - Forwarded message -

Re: Quantum accident survivor

2003-11-04 Thread Frank
Hello, A few comments on your post. If I interpret correctly, you are basically distinguishing "dualistic" interpretations from a "materialistic" ones. When we talk of a materialistic viewpoint, what *are* we talking about? Is it our vague conception that everything is made of atoms what constitu

Re: Quantum accident survivor

2003-11-04 Thread Eric Cavalcanti
Hi, Sorry for the late reply to this: > From: "Hal Finney" <[EMAIL PROTECTED]> > > > > You can "assume" anything you like! > > > > Seriously, we have had extensive and occasionally acrimonious debates > > on this topic in the past, without much success or resolution. I think > > that we have no

Re: Physics News Update 660 (fwd from physnews@aip.org)

2003-11-04 Thread scerir
the paper is this one, I suppose http://arxiv.org/abs/quant-ph/0302179 it was expected that the vacuum behaves as a noisy channel http://arxiv.org/abs/quant-ph/0301065 and in general entanglements are sensible to Lorentzian boosts (but not much) http://arxiv.org/abs/quant-ph/0302095 http://arxi

RE: Is the universe computable?

2003-11-04 Thread Hal Finney
[Note that I take the liberty of replying only to the list, so that senders of earlier messages in the thread do not receive multiple copies of my messages.] David Barrett-Lennard writes: > An interesting idea. > > Where can I read a more comprehensive justification of this > distribution? Jue

Re: Is the universe computable?

2003-11-04 Thread Federico Marulli
Federico Marulli <[EMAIL PROTECTED]> David Barrett-Lennard wrote: > In the thread "a possible paradox", there was talk about a vanishingly > small number of "magical" universes where strange things happen. > However, it seems to me that the bigger risk is that a "normal" > universe like ours will

Re: Physics News Update 660 (fwd from physnews@aip.org)

2003-11-04 Thread Hal Finney
Eugen Leitl forwards: > ACCELERATION DISRUPTS QUANTUM TELEPORTATION, a new study has shown > (Paul Alsing, University of New Mexico, 505-277-9094, > [EMAIL PROTECTED]). In quantum teleportation (see > http://www.aip.org/enews/physnews/1997/split/pnu350-1.htm), > researchers create a pair of partic

Physics News Update 660 (fwd from physnews@aip.org)

2003-11-04 Thread Eugen Leitl
- Forwarded message from [EMAIL PROTECTED] - From: [EMAIL PROTECTED] Date: Tue, 4 Nov 2003 11:11:46 -0500 To: [EMAIL PROTECTED] Subject: Physics News Update 660 Reply-To: [EMAIL PROTECTED] PHYSICS NEWS UPDATE The American Institute of Physics Bulletin of Physics News Number 660 November 4

Re: a possible paradox

2003-11-04 Thread scerir
[me] > >Principles of World Theory say, more or less, that: [...] [Bruno] > Very nice. Except perhaps that it is the principle of the > Old World Theory, implicit in Aristotle > and Leibniz, where all the worlds are accessible from each other. > It is formalised by the modal logic S5. [...] I'll

RE: Is the universe computable?

2003-11-04 Thread David Barrett-Lennard
An interesting idea. Where can I read a more comprehensive justification of this distribution? If a number of programs are isomorphic the inhabitants naturally won't know the difference. As to whether we call this one program or lots of programs seems to be a question of taste and IMO shows th