This was Chu and Ho's earlier paper they published last year. I was
> A Living System Must Have Noncomputable Models
> A. H. Louie
>
> Abstract: Chu and Ho's recent paper in Artificial Life is riddled with
> errors. In particular, they
> use a wrong definition of Robert Rosen's mechanism. This renders their
> "critical assessment" of
> Rosen's central proof null and void.
>
http://www.panmere.com/rosen/Louie_noncomp_pre_rev.pdf>
> Gus Koehler, Ph.D.
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> -----Original Message-----
> From: friam-bounces at redfish.com [mailto:friam-bounces at redfish.com] On Behalf
> Of Joost Rekveld
> Sent: Saturday, December 29, 2007 5:34 AM
> To: The Friday Morning Applied Complexity Coffee Group
> Subject: Re: [FRIAM] Robert Rosen
>
> Hi,
>
> apparently these articles have given rise to rebuttals, see http://
> www.panmere.com/?cat=18 for a survey of this discussion.
>
> I read 'Life Itself' a while ago, found it extremely interesting but not an
> easy read either. Later I read some of the essays from 'Essays on Life
> Itself", which helped. The biggest problem with Rosen's writing was for me
> that it is very concise; for a layman (like me) it would have been good to
> have a bit more flesh around his central argument, in the form of historical
> references and examples.
>
> Later I discovered the writings of Howard Pattee (an essay in the first
> Artificial Life proceedings) and Peter Cariani (his thesis from
> 1989 <
http://homepage.mac.com/cariani/CarianiWebsite/Cariani89.pdf>
> and a later article for example <
http://homepage.mac.com/cariani/> CarianiWebsite/Cariani98.pdf>.
> I found both their writings more digestible.
>
> hope this helps,
>
> Joost.
>
> On Dec 29, 2007, at 5:03 AM, Russell Standish wrote:
>
> > By all means have a discussion. Rosen is not an easy read, nor easy to
> > talk about even. I have some grumbles with Rosen, which I mention in
> > my paper "On Complexity and Emergence", but these are fairly muted.
> > There've been some interesting articles recently in Artificial Life by
> > Chu & Ho that appear to disprove Rosen's central theorem. I suspect
> > their rather more rigourous approach crystalises some of my grumbles,
> > but I haven't found the time yet to try out the analysis more formally
> > myself.
> >
> > Cheers
> >
> > On Fri, Dec 28, 2007 at 08:41:43PM -0700, Nicholas Thompson wrote:
> >> All,
> >>
> >> On the recommendation of somebody on this list, I started reading
> >> Rosen's Life Itself. It does indeed, as the recommender suggested,
> >> seem to relate to my peculiar way of looking at such things as
> >> adaptation, motivation, etc. The book is both intriguing and
> >> somewhat over my head. Pied Piperish in that regard. So I am
> >> wondering if there are folks on the list who wold like to talk about
> >> it. By the way, does the fact that I am attracted to Rosen make me a
> >> category theorist? I am told that that is somewhat to the left of
> >> being an astrologer.
> >>
> >> Nick
> >>
>
>
> -------------------------------------------
>
> Joost Rekveld
> -----------
http://www.lumen.nu/rekveld>
> -------------------------------------------
>
> "This alone I ask you, O reader, that when you peruse the
> account of these marvels that you do not set up for yourself
> as a standard human intellectual pride, but rather the great
> size and vastness of earth and sky; and, comparing with
> that Infinity these slender shadows in which miserably and
> anxiously we are enveloped, you will easily know that I have
> related nothing which is beyond belief."
> (Girolamo Cardano)
>
> -------------------------------------------
>
>
>
>
>
>
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