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Article 5077 of comp.ai.philosophy:
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>From: bill@NSMA.AriZonA.EdU (Bill Skaggs)
Newsgroups: comp.ai.philosophy
Subject: Re: Robert Rosen & Physical form of Church's Thesis
Message-ID: <1992Apr13.005357.154@organpipe.uug.arizona.edu>
Date: 13 Apr 92 00:53:57 GMT
References: <TogZiB1w164w@cybernet.cse.fau.edu> <1992Apr10.165224.11963@organpipe.uug.arizona.edu> <539@trwacs.fp.trw.com>
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Reply-To: bill@NSMA.AriZonA.EdU (Bill Skaggs)
Organization: Center for Neural Systems, Memory, and Aging
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In article <539@trwacs.fp.trw.com> 
erwin@trwacs.fp.trw.com (Harry Erwin) writes:
>The question is asked--is a turbulent flow useful as an algorithm for
>something?
>
  It was me who asked this question, but actually not quite
this question.  Precisely, I asked whether there is any
useful computation that can be made using a chaotic process
(such as a turbulent flow) that cannot also be made by some
Turing machine.

  The answers you give are reasonable, but it is not obvious
that the turbulent flow produces any useful information that cannot
equally well be produced by a detailed digital simulation of
the flow.

  If you could identify such information, you would have a
counterexample to the Church-Turing thesis.

	-- Bill


