<div dir="ltr">I've found the "Transcension hypothesis" as reasonable answer to the Fermi paradox:<div><br></div><div><a href="http://accelerating.org/articles/transcensionhypothesis.html">http://accelerating.org/articles/transcensionhypothesis.html</a><br></div><div><br></div><div>Another nice (and similar) exploration of the trancension idea:</div><div><br></div><div><a href="http://frombob.to/you/index.html">http://frombob.to/you/index.html</a><br></div><div><br></div><div>Jason</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, May 15, 2016 at 3:38 AM, BillK <span dir="ltr"><<a href="mailto:pharos@gmail.com" target="_blank">pharos@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">A Less Bleak Lesson from the Silent Universe<br>
May 7, 2016 by Rick Searle<br>
<br>
<<a href="https://utopiaordystopia.com/2016/05/07/a-less-bleak-lesson-from-the-silent-universe/" rel="noreferrer" target="_blank">https://utopiaordystopia.com/2016/05/07/a-less-bleak-lesson-from-the-silent-universe/</a>><br>
<br>
Quotes:<br>
<br>
The astronomers Adam Frank and Woodruff Sullivan have an interesting<br>
paper out where they’ve essentially flipped the Drake Equation on its<br>
head. If that equation is meant to give us some handle on the<br>
probability that there are aliens out there, Frank and Sullivan have<br>
used the plethora of exoplanets discovered since the launch of the<br>
Kepler space telescope to calculate the chance that, so far, we alone<br>
have been the only advanced civilization in the 13.7 billion year<br>
history of the universe. I won’t bore you with actual numbers, but<br>
they estimate the chance that we’re the first and only is 1 in 10<br>
billion trillion. I shouldn’t have to tell you that is a really,<br>
really small number.<br>
----<br>
We do have pretty good evidence of at least one thing: if there are,<br>
or have been, technological civilizations out there none is using the<br>
majority of its galaxy’s energy. As Jim Wright at Penn State who<br>
conceived of the recent scanning 100,000 galaxies that had been<br>
observed by NASA’s Wise satellite for the infrared fingerprints of a<br>
galactic civilization discovered. Wright observed:<br>
<br>
Our results mean that, out of the 100,000 galaxies that WISE could see<br>
in sufficient detail, none of them is widely populated by an alien<br>
civilization using most of the starlight in its galaxy for its own<br>
purposes. That’s interesting because these galaxies are billions of<br>
years old, which should have been plenty of time for them to have been<br>
filled with alien civilizations, if they exist. Either they don’t<br>
exist, or they don’t yet use enough energy for us to recognize them.<br>
-----<br>
Yet perhaps we should conclude something different about the human<br>
future from this absence of galactic scale civilizations than the sad<br>
recognition that our species is highly unlikely to have one. Instead,<br>
maybe what we’re learning is that the kind of extrapolation of the<br>
industrial revolution into an infinite future that has been prevalent<br>
in science-fiction and futurism for well over a century is itself<br>
deeply flawed. We might actually have very little idea of what the<br>
future will actually be like.<br>
<br>
Then again, maybe the silence gives us some clues. Rather than present<br>
us with evidence for our species probable extinction, perhaps what<br>
we’re witnessing is the propensity of civilizations to reach<br>
technological limits *before* they have grown to the extent that they<br>
are observable across great interstellar distances by other<br>
technological civilizations.<br>
----<br>
Since the industrial revolution our ideas about both the human future<br>
and the nature of any alien civilization have taken the shape of being<br>
more of the same. Yet the evidence so far seems to point to a much<br>
different fate. We need to start thinking through the implications of<br>
the silence beyond just assuming we are either prodigies, or that, in<br>
something much less than the long run, we’re doomed.<br>
-------------------------<br>
End Quotes.<br>
<br>
<br>
To me, that seems an optimistic interpretation of the Great Silence.<br>
Given the billions of galaxies we see and the billions of star systems<br>
in each galaxy, that humans are the only intelligent species is<br>
really, really unlikely. The other option, that all intelligent<br>
species quickly become extinct (in galactic time scales) gives<br>
humanity a very bleak future.<br>
<br>
So that leaves a more optimistic option.<br>
As Searle suggests, civilisations might hit technological limits that<br>
force them to stabilise at a level undetectable at interstellar<br>
distances. Mastering nano-tech might enable very complex civilisations<br>
to exist in small spatial dimensions.<br>
<br>
This is an appealing solution to the Great Silence. As previous<br>
commentators have noted, there has been plenty of time for just one<br>
exponential species to have colonised the whole galaxy. So that vision<br>
of the future is almost certainly mistaken.<br>
For long-lived civilisations nano-tech and sustainable energy<br>
efficiency looks good.<br>
<br>
<br>
BillK<br>
<br>
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</blockquote></div><br></div>