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To: SunkenCiv

The Fermi paradox is a paradox proposed by physicist Enrico Fermi that questions the possibilities of finding intelligent extraterrestrial life. More specifically, it deals with the attempts to answer one of the most profound questions of all time: "Are we (the earthlings) the only technologically advanced civilization in the Universe?". The Drake equation for estimating the number of extraterrestrial civilizations with which we might come in contact seems to imply that we should not expect such contact to be extremely rare. Fermi's response to this conclusion was that if there were very many advanced extraterrestrial civilizations in our galaxy, then, "Where are they? Why haven't we seen any traces of intelligent extraterrestrial life e.g. probes, spacecraft or transmissions?". Those that adhere to the premise behind the Fermi paradox often refer to that premise as the Fermi principle.

The paradox can be summed up as follows: The commonly held belief that the universe has many technologically advanced civilizations combined with our observations that suggest otherwise, is paradoxical, suggesting that either our understanding or our observations are flawed or incomplete.


7 posted on 01/02/2005 6:17:33 AM PST by FormerACLUmember (Free Republic is 21st Century Samizdat)
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To: FormerACLUmember

results of Google search for +freerepublic +"fermi paradox"

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8 posted on 01/02/2005 6:21:29 AM PST by SunkenCiv (the US population in the year 2100 will exceed a billion, perhaps even three billion.)
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To: FormerACLUmember

The answer to the paradox, so many stars, so few civilizations, could be that civilizations have a short lifespan. Even a lifetime of a million years would not be enough to guarantee that there would be another civilization inside the Milky Way. Since our own glorious civilization is maybe five thousand years old, we probably have no idea what it would take to get another million years out of our system.


24 posted on 05/13/2005 9:32:53 AM PDT by RightWhale (These problems would not exist if we had had a moon base all along)
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To: FormerACLUmember; LibWhacker
FormerACLUmember: The paradox can be summed up as follows: The commonly held belief that the universe has many technologically advanced civilizations combined with our observations that suggest otherwise, is paradoxical, suggesting that either our understanding or our observations are flawed or incomplete.
Well put. But the observations exist; they existed when Fermi made his famous (or infamous) bon mot. And they are rejected on a priori grounds.

Even though SETI has been a complete and utter failure -- of course, using one of the same criteria used to reject all UFO sightings, that of irreproducibility -- it isn't evidence of non-existence of technological alien civs.

In the book "Communication with Extraterrestial Intelligence" (Sagan editor -- CETI was the old acronym) Thomas J Gold ("Deep Life", "Power from the Earth") said "But I am not really willing to accept your premise, because it may well be that the means of communications they have are of a kind that we do not know how to receive, and that they would not have the means of communicating with sufficiently powerful radio or optical signals. That is something which, technologically, is too difficult for them but they would have some other means we would not recognize." (see also 210)

That knowledge is always incomplete is (or should be) an axiom.

The paradox doesn't exist.
Google

50 posted on 05/15/2005 9:54:31 PM PDT by SunkenCiv (FR profiled updated Tuesday, May 10, 2005. Fewer graphics, faster loading.)
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