<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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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;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><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'> extropy-chat <extropy-chat-bounces@lists.extropy.org> <b>On Behalf Of </b>John Clark via extropy-chat<br><b>…</b></span><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:13.5pt;font-family:"Tahoma",sans-serif;color:black'>QWEN AI:</span></b></span><span class=gmaildefault><i><span style='font-size:13.5pt;font-family:"Arial",sans-serif;color:black'> </span></i></span><i><span style='font-size:13.5pt;font-family:"Arial",sans-serif;color:black'>Even if a small, cheap probe successfully reaches an exoplanet 1,000 light-years away, how does it report back?</span></i><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:13.5pt;font-family:"Tahoma",sans-serif'>>…<span style='color:black'>Why does it need to report back?<span class=gmaildefault> </span></span></span></b><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'>John K Clark<o:p></o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'>It doesn’t need to report back necessarily, but one might reasonably argue it needs to stop at the end of the journey, or at least slow enough to drop into orbit of the target star. This is a lot harder to do than to accelerate to .001c.<o:p></o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'>If we have full Drexlerian nanotech, a reflective sheet can be constructed sufficiently thin to use radiation pressure to achieve both the acceleration here and deceleration there, but it takes exceedingly advanced technology. I am convinced to my satisfaction that carbon-based brains are not smart enough to do it, but silicon-based minds, maybe. It isn’t clear that silicon based minds are ambitious however.<o:p></o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'>This lack of ambition is perhaps a way to explain Fermi’s inquiry: intelligent life forms advance until they lose the desire to conquer the galaxy.<o:p></o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'>spike<o:p></o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><span class=gmaildefault><b><span style='font-size:18.0pt;font-family:"Tahoma",sans-serif'><o:p> </o:p></span></b></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><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><o:p> </o:p></p></blockquote></div></body></html>