<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><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>Mike Dougherty via extropy-chat<br><b>Subject:</b> Re: [ExI] 30 Solutions to the Fermi Paradox<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><p class=MsoNormal>On Wed, Mar 17, 2021, 8:58 PM spike jones 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><br>BillK, the real paradox isn't so much that no civilization appears to have colonized the galaxy, but rather that there is an absence of radio signals. I think I understand why no one has managed to cross the enormous gulf between stars: it is just too dang far for actual life forms to traverse, even at the dense core of the galaxy. But I am still astonished there are no signals.<o:p></o:p></p></blockquote></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>>…Take out your old AM/FM radio and see if you can tune in any part of the WiFi or LTE signals going through your house.<o:p></o:p></p></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><o:p> </o:p></p></div><div><p class=MsoNormal>>…My preferred answer to Fermi's is that we're just not capable yet. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Entirely possible Mike. But we are doing constant frequency scanning, so we can detect all the AM and FM signals still zinging around, as well as all the other frequencies. We can tell if a signal is there. This is what SETI-AtHome does: sifts thru enormous piles of data looking for a carrier frequency.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I think you are right however: there is some form of radio communications that we don’t know about yet, which I think is highly directional collimated EM. If we are not in the line of sight, we don’t get the signal.<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>