<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Nov 21, 2019 at 11:58 AM BillK 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:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
Today we look up at the stars and wonder if we’re alone in the<br>
universe. In fantasy and science fiction, we wonder what it might be<br>
like to meet other intelligent species, like us, but not us. It’s<br>
profoundly sad to think that we once did, and now, because of it,<br>
they’re gone.</blockquote><div><br></div><div>### Our ancestors actually met these other intelligent species and, in their great wisdom, killed them (and probably ate them, too), rather than just wait to be killed (and eaten).</div><div><br></div><div>There is a rule in ecology that the presence of two or more species in the same ecological niche is unstable and reliably ends with all but one of them becoming extinct. Our niche is created by our having general, social and technological intelligence, so long-term coexistence with other intelligent species is by this rule impossible.</div><div><br></div><div>It's often advisable not to look too closely at how sausage and dominant species are made.</div><div><br></div><div>Rafal</div></div></div>