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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><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>…</b>> <b>On Behalf Of </b>Jason Resch via extropy-chat<br><b>Subject:</b> Re: [ExI] 1 mm^3 of brain<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><div><p class=MsoNormal>On Sat, May 18, 2024, 2:24 PM BillK via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>On Wed, 15 May 2024 at 01:26, Darin Sunley <<a href="mailto:dsunley@gmail.com" target="_blank">dsunley@gmail.com</a>> wrote:<br>><br>…<br><br><<a href="https://www.linkedin.com/pulse/uploading-mind-can-future-tech-store-our-christopher-neal-glnzc" target="_blank">https://www.linkedin.com/pulse/uploading-mind-can-future-tech-store-our-christopher-neal-glnzc</a>><br><br>This is an impressive article written by the Gemini AI<o:p></o:p></p></blockquote></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>>…Nice article. However I disagree with it's conclusion that mind uploading would require so much storage. In previous experiments with reducing electron-microscopic imagery to a connection map, saw a roughly million-fold decrease in storage size.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>>…Bostrom and Sanders… <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Ja, Sandberg. But Sanders can be used as a kind of shorthand for Anders.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>…estimated ( <a href="https://www.fhi.ox.ac.uk/brain-emulation-roadmap-report.pdf">https://www.fhi.ox.ac.uk/brain-emulation-roadmap-report.pdf</a> ) that somewhere around 8,000 Terabytes (at 8 bytes per synapse) is more realistic for what a neuronal simulation of the brain would require… Jason<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We still haven’t figured out that special magic of a biological brain. It doesn’t really rely on memory locations analogous to a digital computer, but rather biochemical patterns that exist (somehow) in this neurological tangle between our ears. Oh that is some marvelous magic, but I don’t think we will get there by trying to simulate synapses individually.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We used finite element analysis to digitally simulate what a structure will do however, and it works well enough. We model a continuous structure as a collection of rigid cubes with a known flexible interface between the cubes. I think of it as the atomic world version of a Reimann sum, kinda sorta. It works, if you make your elements small enough, just as a Reimann sum works if you cut your strips thin enough.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I hafta think there is some acceptable finite-elementish way to model a synapse that won’t require 8 petabytes. I don’t even like the term petabyte: it sounds expensive and too much like being attacked by the neighbor’s rabid dog.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>spike<o:p></o:p></p></div></div></div></body></html>