Very well, Professor Standish, given that, could the Hubble Volume itself, then be considered as one CA? A CA that is 13.7 light years across, and thus, that old? Is this CA, or all CA's something that emerges from thermo and fluid dynamics, or does it require (sigh!) a programmer, in the Jurgen Schmidhuber, sense of the word? Apologies for my obtuseness, but hey, this what all good primates do, connect dots, make assumptions.

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Thanks, Mitch -----Original Message----- From: Russell Standish <li...@hpcoders.com.au> To: everything-list <everything-list@googlegroups.com> Sent: Thu, Oct 3, 2013 8:13 pm Subject: Re: The confluence of cosmology and biology There are plenty of examples, but it will take too long to extract the literature. For example, the Navier-Stokes equations describing fluid flow can be simulated via an appropriate hex tiling (close packed spheres) CA (or generalised CA). I've seen people give examples of CAs simulating the reaction-diffusion equations that Turing used for his famous morphogenesis study. Cheers On Thu, Oct 03, 2013 at 05:38:45PM -0400, spudboy...@aol.com wrote: > > Does anyone know any phenomena in nature or science that duplicates > the behavior of Cellular Automata? Does cell biology do the tasks > of CA, orbis this merely, a mathematical abstraction? Does anything > in physics come to mind, when refering to CA? > > > -----Original Message----- > From: Bruno Marchal <marc...@ulb.ac.be> > To: everything-list <everything-list@googlegroups.com> > Sent: Wed, Oct 2, 2013 10:18 am > Subject: Re: The confluence of cosmology and biology > > > On 02 Oct 2013, at 03:56, Russell Standish wrote: > > >On Tue, Oct 01, 2013 at 02:54:51PM +0200, Bruno Marchal wrote: > >> > >>On 01 Oct 2013, at 01:30, Russell Standish wrote: > >>> > >>>The real universe is likely to be 11 dimensional, nonlocal with > >>>around > >>>10^{122} states, or 2^{10^{122}} possible universes, if indeed it > >>>is a > >>>CA at all. Needles in haystacks is a walk in the park by comparison. > >> > >>CA are local. The universe cannot be a CA if comp is correct, and > >>the empirical violation of Bell's inequality confirms this comp > >>feature. > >> > >>Bruno > >> > > > >There is no particular requirement for CAs to be local, although local > >CAs are by far easier to study than nonlocal ones, so in practice they > >usually are (cue obligatory lamp post analogy). > > We can easily conceive quantum CA. > But those are not what is named simply CA (which locality is quite > typical). > You will not find quantum CA in Wolfram (well, in my edition). > > > > > >Unless you mean something else by locality. I mean that there is some > >neighbourhood radius such that the update function for a given cell > >only access the states of cells within the given radius. > > > >Having said that - I notice that Wikipedia, Wolfram.com and also Andy > >Wuensche's article on Discrete Dynamical Networks > >(http://www.complexity.org.au/ci/vol06/wuensche/) all state that the > >update function must be local in the manner described above in their > >definitions of "cellular automata". In which case, you are correct. > > OK. > > > > >I am clearly taking about a more general subset of discrete dynamical > >networks in which the cells are still tiling an n-dimensional space, > >but that the update function does not depend on a local neighbourhood > >of the cell to be updated. > > Better not to call them CA, but quantum CA, or why not comp-CA, as > comp entails non locality, non cloning, indeterminacy, etc. > > > > > >I don't know what Wolfram was talking about though - I just assumed he > >wouldn't be thinking in terms of local update functions for his "CA of > >the universe". > > Alas, that is what he does, or did. > At the time he wrote his books, he put all the QM weirdness under the > rug. He said that if non-locality is a real consequence of QM, it > means that QM is false. > > There are just very few people who grasp those three things at once: > > - the mind-body problem > - the conceptual QM astonishing features (non locality, non cloning, > indeterminacy, etc) > - Church thesis and the non triviality of the discovery of the > universal machine and its fundamental "creative limitations". > > > Bruno > > > > http://iridia.ulb.ac.be/~marchal/ > > > > -- > 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 everything-list+unsubscr...@googlegroups.com. > To post to this group, send email to everything-list@googlegroups.com. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/groups/opt_out. > > > > -- > 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 everything-list+unsubscr...@googlegroups.com. > To post to this group, send email to everything-list@googlegroups.com. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/groups/opt_out. -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Professor of Mathematics hpco...@hpcoders.com.au University of New South Wales http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- You received this message because you are subscribed to the Google Groups "Everything List" group. 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