09-07-2018, 07:23 PM | #31 |
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Join Date: Oct 2004
Location: Forest Grove, Beaverton, Oregon
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Re: Why do dopplegangers keep being born centuries after a divergence?
I doubt there's any in our galaxy, but in the entire observable universe? It's over 46 billion light years across. That is just too huge of an volume to make such claims, IMO.
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09-07-2018, 09:14 PM | #32 |
Join Date: Feb 2005
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Re: Why do dopplegangers keep being born centuries after a divergence?
Look st the math. I can’t do it but the people who can say it’s so... they might be wrong, but I can’t prove it... and nobody can prove anything simply by saying “I don’t like the answer so it must be wrong”.
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09-08-2018, 02:21 AM | #33 | |
Join Date: Dec 2006
Location: Meifumado
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Re: Why do dopplegangers keep being born centuries after a divergence?
Quote:
When we update this prior in light of the Fermi observation, we find a substantial probability that we are alone in our galaxy, and perhaps even in our observable universe (53%–99.6% and 39%–85% respectively) In any case, any paper that uses the Drake Equation and argues that N=1 has to then explain why N isn't 0.
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09-08-2018, 03:31 AM | #34 | |
Join Date: Nov 2004
Location: Niagara, Canada
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Re: Why do dopplegangers keep being born centuries after a divergence?
Quote:
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09-08-2018, 03:58 PM | #35 | |
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Join Date: Aug 2004
Location: Dallas, Texas
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Re: Why do dopplegangers keep being born centuries after a divergence?
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09-08-2018, 04:25 PM | #36 | |
Join Date: Jul 2008
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Re: Why do dopplegangers keep being born centuries after a divergence?
Quote:
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09-08-2018, 07:59 PM | #37 | |
Join Date: Dec 2006
Location: Meifumado
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Re: Why do dopplegangers keep being born centuries after a divergence?
Quote:
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09-11-2018, 11:55 AM | #38 | |
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Join Date: Aug 2004
Location: Sumter, SC
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Re: Why do dopplegangers keep being born centuries after a divergence?
Quote:
While L in the past has been how long the civilization lasts is has had 'revealing their existence via signal release into space' added to the mix. The Fermi Paradox Compendium goes into the many possible solutions which is broken up into four broad categories: 1) Alien Civilizations are rare 2) We can't detect them 3) We can't recognize them 4) Miscellaneous One idea is there simply hasn't been much time. Home sapiens has been around about 200,000 years but civilization is only about 5,000 years and our radio signals roughly 80 years. Another solution comes from EC's Weird Science (IIRC) where the refugees of Earth find out that they have no resistance to the diseases on the first planet they land on. More over the younger generation has no concept of nature resulting in Agoraphobia and host of other issues. They eventually conclude that they can't really live on that or any other planet and return to the comfort of the stars. Last edited by maximara; 09-11-2018 at 12:31 PM. |
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