thanks for the info. Very educational (although I skip reading Christof's 
entire text). 
From your excerpt: I have a "2nd question": how about "waves"? they must be 
of the same 'stuff' as the 'strings', maybe in a lesser number of dimensions. 
And let me skip my retrograde series of going through (the) other concepts...
They are all deductions from the (as you put it) primitive material world view, 
and its closed model, called "physics".  At the end of my 'skipped' series you 
may find 'numbers', I may wish to go further (but cannot?) 


John M
  ----- Original Message ----- 
  From: Bruno Marchal 
  Sent: Tuesday, March 20, 2007 10:25 AM
  Subject: Re: String theory and Cellular Automata

  You could be interested by a paper introducing String theory as a syntactical 
logical structure by the "other Schmidhuber" (Juergen's brother Christof):


  What are strings made of? The possibility is discussed that strings are 
purely mathematical objects, made of logical axioms. More precisely, proofs in 
simple logical calculi are represented by graphs that can be interpreted as the 
Feynman diagrams of certain large-N field theories. Each vertex represents an 
axiom. Strings arise, because these large-N theories are dual to string 
theories. These ``logical quantum field theories'' map theorems into the space 
of functions of two parameters: N and the coupling constant. Undecidable 
theorems might be related to nonperturbative field theory effects.

  This is infinitely better than Wolfram pure classical CA approach which has 
no rules for distinguishing 1 and 3 person notion, and so miss the idea of 
internal emerging physical laws. 

  Le 14-mars-07, à 10:23, Mohsen Ravanbakhsh a écrit :

    I'm thinking there's some kind of similarity between string theory and 
depicting the world as a big CA. In String theory we have some vibrating 
strings which have some kind of influence on each other and can for different 
matters and fields. CA can play such role of changing patterns and of course 
the influence is evident. Different rules in CA might correspond to various 
basic shapes of vibration in strings... 
    I don't know much about S.T. but the idea of such mapping seems very 

    Mohsen Ravanbakhsh.



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