### Re:The difference between a human and a rock

How does a human differ in kind from a rock? -Well both are well modelled as being slow processes (i.e. localized states and events) in spacetime. - A process is a particular kind of pattern of organization of some subregion of spacetime. - We share being made of similar kinds of matter

### Re: Computational irreducibility and the simulability of worlds

Eric Hawthorne writes: So does that mean we just say think of the substrate of the universe as being a turing machine equivalent, any old turing machine equivalent. Ok, but still, you have to admit that every easy to think of instantiation of a turing machine (e.g. a PC with a lot of time

### Re: Computational irreducibility and the simulability of worlds

On Sat, Apr 17, 2004 at 01:03:03AM -0700, Hal Finney wrote: How about Tegmark's idea that all mathematical structures exist, and we're living in one of them? Or does that require an elderly mathematician, a piece of parchment, an ink quill, and some scribbled lines on paper in order for us

### Re: Computational irreducibility and the simulability of worlds

Eugen, an outsider thought to your interesting attachment: We know about two parallel worlds (wit languages?): A. the 'physos'-observable one - som call material reality (I don't), B. mathematics I extend A into all white elephant/rabbit versions we can 'talk' about. B exists in the mind of

### Re: Re:The difference between a human and a rock

Eric, an apology: I just misplaced a remark to this post of yours into my response to Eugen as a PS. Please forgive John Mikes - Original Message - From: Eric Hawthorne [EMAIL PROTECTED] To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Saturday, April 17, 2004 3:03 AM Subject: Re:The

### Re: Quantum mechanics without quantum logic

At 11:42 15/04/04 +0200, Saibal Mitra wrote: http://arxiv.org/abs/quant-ph/0404045 Quantum mechanics without quantum logic Authors: D.A. Slavnov Comments: 24 pages, no figures, Latex We describe a scheme of quantum mechanics in which the Hilbert space and linear operators are only secondary

### Re: Computational irreducibility and the simulability of worlds

Hal Finney wrote: How about Tegmark's idea that all mathematical structures exist, and we're living in one of them? Or does that require an elderly mathematician, a piece of parchment, an ink quill, and some scribbled lines on paper in order for us to be here? It seems to me that mathematics

### Re:The difference between a human and a rock

Hi Eric: At 03:03 AM 4/17/2004, you wrote: How does a human differ in kind from a rock? -Well both are well modelled as being slow processes (i.e. localized states and events) in spacetime. - A process is a particular kind of pattern of organization of some subregion of spacetime. - We share

### Re: The difference between a human and a rock

Hal Ruhl wrote: I see nothing in the rest of your post that makes my believe there is a difference of kind between rocks and humans. I believe it is a mistake to concentrate only on the reductionist theory of the very small, and to assume that there is nothing else interesting about systems

### Re: Quantum mechanics without quantum logic

Dear Friends, I found the seventh paragraph on page 9 to be telling: The conditions of the Kochen-Specker theorem are not carried out in the approach described in present paper. ... This might be the locus upon which the fallacy of the paper turns. Stephen - Original Message -