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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt'>SFI had one of these for a while. (As far as I know it just sat there.)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><a href="http://www.ai.mit.edu/projects/im/cam8/">http://www.ai.mit.edu/projects/im/cam8/</a><br><br>Nowadays GPUs are used for Lattice Boltzmann.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Friam <friam-bounces@redfish.com> <b>On Behalf Of </b>steve smith<br><b>Sent:</b> Friday, January 10, 2025 8:38 AM<br><b>To:</b> friam@redfish.com<br><b>Subject:</b> Re: [FRIAM] the patterns of barricelli<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p>Great find! I remember reading about Barricelli in (younger) Dyson's "Darwin Among the Machines" but didn't appreciate most of what is described in this piece.<o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p><another long-winded memoiresque reflection on early days of "modern" CA/><o:p></o:p></p><p><a href="https://sgp.fas.org/othergov/doe/lanl/pubs/00326990.pdf"><span style='text-decoration:none'><img border=0 width=394 height=527 style='width:4.1071in;height:5.488in' id="Picture_x0020_1" src="cid:image001.png@01DB6343.7721E3F0"></span><br></a><o:p></o:p></p></blockquote><p><a href="https://sgp.fas.org/othergov/doe/lanl/pubs/00326990.pdf">https://sgp.fas.org/othergov/doe/lanl/pubs/00326990.pdf</a><o:p></o:p></p><p><o:p> </o:p></p><p>In 1983 at the CA conference held at LANL there were myriad references to "non-standard" CA of various types, ranging as I remember it, from Crutchfield's video-feedback CA (vidicon tube camera pointed at CRT with various mechanical and electronic adjusters (distance, zoom, rotation, focus) to emulate different 2D rules... wonderfully analog, all ntsc, a *very expensive* digital capture card in the loop. There was also a dedicated digital computer being built to execute CA directly (Margolis, et al?) that I'm guessing went nowhere in the long run. I was shocked to find out how young Wolfram was (2 years my junior) because I felt like "just a kid" at 26. I think Gosper presented his proto-Golly (memoization) HashLife?<o:p></o:p></p><p> I think it was that conference (but might have been the follow on "Evolution Games and Life" (precursor to the ALife conferences) ) where Ed Fredkin circulated a photocopied hand-typed paper outlining his "Digital Physics" concept ( with header footer declaring " D (R) A F T ". He was very charming. It was also followed by Feynman giving his "Plenty of Room at the Bottom" lecture at LANL proper which he ended with an outline of K. Eric Drexler's Master's thesis which had not yet become the well known seminal book "Engines of Creation".<o:p></o:p></p><p>Re: Barricelli's 1D CA, I remember that at the conference one of the budding luminaries (maybe Farmer, maybe Packard, maybe Crutchfield?) gave a talk/paper on the notion of universality in CA... including a methodology for translating one configuration (spatial and state-space dimension) into another. So in this case, in principle, something like Baricelli's 1D CA could emulate/execute/interpret any other CA. <o:p></o:p></p><p>I believe that Ulam was still alive (died later that year?) but definitely not available for the conference but during that era I often arrived at my parking spot near the time Nick Metropolis did and while our offices were in different buildings, it felt a boon to see him so often, shuffling in. <o:p></o:p></p><p>On the topic of non-standard state-space/geometries/topologies, that conference kicked off a small side-project for me writing the code (C) for a CA to model the possible "information processing on Cyteskeletal Lattice" (Microtubules) with Stuart Hameroff. (most) MT are 3-off helical 13 unit tubes of proteins (alpha-beta tubulin), so there were no obvious extant simulation frameworks for implementing such a thing and there was no theory really of what *might* be going on at the tubulin-level to represent a "state space" so a lot of what we did was raw speculation... I was actually surprised the work got accepted into Physica D. <o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p><a href="https://experts.arizona.edu/en/publications/cellular-automata-in-cytoskeletal-lattices">https://experts.arizona.edu/en/publications/cellular-automata-in-cytoskeletal-lattices</a><o:p></o:p></p></blockquote><p>The paper yielded a contact from (sir!) Roger Penrose who insisted that the key to consciousness was in "aperiodic tilings". I don't think we referenced it in the paper but I *had* thought a lot about the possible implications of the implied complexity space of a 2-state CA (inspired by Frolich Oscillations) in the 3-off 13 unit geometry with a (skew) hexagonal neighborhood kernel. I never got far on those reflections though they have come back to me time and again over the decades. I was not then (nor have been since) employed by anyone to work on or even think about such things, but that didn't stop me, just slowed me down. To make a long story short(ish) I blew off Penrose by not responding (*of course, when you have an a-periodic tiling hammer, everything looks like an a-periodic nail!*) but he eventually connected directly with Hameroff (and the rest is history).<o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p><a href="https://neuroscienceblog.net/2020/10/31/quantum-consciousness/">https://neuroscienceblog.net/2020/10/31/quantum-consciousness/<br></a><o:p></o:p></p></blockquote><p>Part of what triggered this tangent (doesn't take much does it?) was Roger's reference to the Baricelli paper being typewritten. My original drafts of the MT paper were all hand-typed (on a CRAY1 over a time-sharing key-board concentrator with a dot-matrix printer beside my DEC CRT terminal) but our resident writer-editor actually retyped it all on an IBM Selectric (it was just her process!). While the UofA graphics arts dept did a manual rendering of the images of CA on MT, the originals were all character-graphics!<o:p></o:p></p><p>And here we are on the verge (or not) of AGI or ASI ? And Nanotech? The first Fullerenes (C60) werent "discovered" until a year later (1985!)<o:p></o:p></p><p>...we do live in interesting times...<o:p></o:p></p><p>though it may all get washed under by iteratively trained LLMs to where the noosphere consists *entirely* of AI hallucinations with only the barest residue of "original works" by humans? Or maybe our own self-licking ice-cream-cone of culture already folded in all primary experience... nothing you can't get back to with an appropriate dose of psychadelics? Full circle? Or more of an ellipse? or a toroid, or a helix? bah!<o:p></o:p></p><p><o:p> </o:p></p><div><p class=MsoNormal>On 1/10/25 6:59 AM, Roger Critchlow wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>discoveries from the prehistory of cellular automata, artificial life, and chaos theory, when papers were typewritten <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><a href="https://akkartik.name/post/2024-08-30-devlog">https://akkartik.name/post/2024-08-30-devlog</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>via hackernews<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>or maybe a chatGPT hallucination<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>-- rec --<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal><br><br><o:p></o:p></p><pre>.- .-.. .-.. / ..-. --- --- - . .-. ... / .- .-. . / .-- .-. --- -. --. / ... --- -- . / .- .-. . / ..- ... . ..-. ..- .-..<o:p></o:p></pre><pre>FRIAM Applied Complexity Group listserv<o:p></o:p></pre><pre>Fridays 9a-12p Friday St. Johns Cafe / Thursdays 9a-12p Zoom <a href="https://bit.ly/virtualfriam">https://bit.ly/virtualfriam</a><o:p></o:p></pre><pre>to (un)subscribe <a href="http://redfish.com/mailman/listinfo/friam_redfish.com">http://redfish.com/mailman/listinfo/friam_redfish.com</a><o:p></o:p></pre><pre>FRIAM-COMIC <a href="http://friam-comic.blogspot.com/">http://friam-comic.blogspot.com/</a><o:p></o:p></pre><pre>archives: 5/2017 thru present <a href="https://redfish.com/pipermail/friam_redfish.com/">https://redfish.com/pipermail/friam_redfish.com/</a><o:p></o:p></pre><pre> 1/2003 thru 6/2021 <a href="http://friam.383.s1.nabble.com/">http://friam.383.s1.nabble.com/</a><o:p></o:p></pre></blockquote></div></body></html>