<div dir="auto"><div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 10, 2023, 9:37 PM Brent Allsop via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><br></div><div>Hi Jason,</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 10, 2023 at 5:35 PM Jason Resch via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org" target="_blank" rel="noreferrer">extropy-chat@lists.extropy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>The computer metaphor is the idea that the brain works like a computer. I agree with you that the brain works nothing like a computer. The brain is not a device with logic gates, or instructions, or addressable memory. It's not a Turing machine.</div></div></blockquote><div><br></div><div>Wait, help me out here. My understanding of a "Turing machine" is any machine that is "turing complete" (able to "replicate the operations of any finitely describable system")</div><div>But a human consciousness is able to both understand and replicate the operations of any finitely describable system, isn't it?</div></div></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">A person with an abundance of patience and diligence, and given the right equipment (like a rule book, pencil, eraser, and unlimited paper) could, for a while, imitate the workings of a Turing machine.</div><div dir="auto"><br></div><div dir="auto">This does mean that their brain is a Turing machine, or that it functions like one. It only highlights the fact that individual steps performed by Turing machines are generally simple enough and from a small enough repertoire that they could be worked out by hand by a person.<br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div><br></div><div>Oh wait, unless you are only talking about a specific Turing machine that represents things on properties that are holes in paper, and not any machine that represents information with other physical properties or qualities?</div></div></div></blockquote></div></div><div dir="auto"><br></div><div dir="auto">Regardless of what it uses to represent information, the brain by itself, given it's limited working memory, isn't able to model any Turing machine's computation for long.</div><div dir="auto"><br></div><div dir="auto">Jason </div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div><br></div><div><br></div><div><br></div><div><br></div><div> </div></div></div>
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