<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Jan 26, 2026 at 10:10 AM BillK via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><div dir="ltr" class="gmail_attr"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="color:rgb(0,0,0)"><font size="4" style="" face="georgia, serif"><i style=""><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">> </span>By the time such a world-scale project could be contemplated and funded, every nation will have miniature stars in fusion reactors producing more energy than they can use.</i></font></span></blockquote><div><br></div><div><font size="4" face="tahoma, sans-serif"><b>I disagree,<span class="gmail_default" style=""> computational capacity takes energy and I don't think you can ever have too much of that. And I do not believe I am the only mind in the observable universe that holds that opinion. </span>If intelligent life is common<span class="gmail_default" style=""> then somebody somewhere is going to decide to make a certain machine that has a mass of only 10^-12 grams. And it would only take one guy. So why don't we see any evidence of that? The answer is obvious. </span></b></font></div><div><font size="4" face="tahoma, sans-serif"><b><span class="gmail_default" style=""><br></span></b></font></div><div><font size="4" face="tahoma, sans-serif"><b><span class="gmail_default" style="">John K Clark</span></b></font></div><div><span class="gmail_default" style=""><font size="4" face="tahoma, sans-serif"><b><br></b></font></span></div><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></span></div><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></span></div><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></span></div><div dir="ltr" class="gmail_attr"><br></div><div dir="ltr" class="gmail_attr"><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="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 26 Jan 2026 at 12:17, John Clark <<a href="mailto:johnkclark@gmail.com" target="_blank">johnkclark@gmail.com</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="ltr"><div dir="ltr"><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif">On Sun, Jan 25, 2026 at 5:32 PM BillK via extropy-chat <</span><a href="mailto:extropy-chat@lists.extropy.org" style="font-family:Arial,Helvetica,sans-serif" target="_blank">extropy-chat@lists.extropy.org</a><span style="font-family:Arial,Helvetica,sans-serif">> wrote:</span></div></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><br></div><div dir="ltr" class="gmail_attr"><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote"><font size="4" face="georgia, serif"><i><span style="color:rgb(0,0,0)"><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">> </span>I asked Claude Opus 4,5 - Will all advanced civilizations build a Dyson swarm around their star?<span class="gmail_default"> </span></span>Claude suggested that this idea could be a mistaken projection of 20th-century ideas onto the cosmos.</i></font></blockquote><div><br></div><font size="4" face="tahoma, sans-serif"><b>I don't find any of Claude's excuses to explain the embarrassing fact that astronomers have never seen anything like a Dyson sphere to be persuasive. If intelligent life is common in the observable universe I simply don't believe that not one of the trillion quadrillion minds in that universe<span class="gmail_default"> </span>thought it would be a good idea to make a 10^-12 gram self duplicating machine that is capable of making a Dyson <span class="gmail_default" style="font-family:arial,helvetica,sans-serif">S</span>phere, lots of them. Hell, I am a mind in the observable universe and if I had the ability to make such a machine I certainly would, and I don't think I<span class="gmail_default">'m</span> unique. </b></font><div><font size="4" face="tahoma, sans-serif"><b><span class="gmail_default"><snip></span></b></font> </div></div></div></div></div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><div><font size="4" face="tahoma, sans-serif"><b></b></font></div><div><font size="4" face="tahoma, sans-serif"><b><span class="gmail_default"> John K Clark</span><br></b></font></div></div></div></div></div></blockquote><div><span class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">-</span></div></div></div></div></div></div>
</blockquote></div></div>