[ExI] Eternity in six hours: intergalactic spreading of intelligent life and sharpening the Fermi paradox

[Tomaz Kristan]

> they conclude that sitting around waiting for their sun/s to die off or
explode is a really bad idea, especially if they have the technical means
to extend its life span through the complete recycling of its emitted
radiation.

Instead of just recycling their initial star's energy, wouldn't they want
to recycle all around?

This self limitation is very unlikely. Even much less for "all those
millions civs everywhere".

The Rare Earth is the only sane explanation for our apparent solitude.


On Tue, Sep 10, 2013 at 10:52 AM, Andrew Mckee <andymck35 at gmail.com> wrote:

> On Tue, 10 Sep 2013 08:54:59 +1200, John Clark <johnkclark at gmail.com>
> wrote:
>
>
>  I think we could probably detect a Dyson sphere with its distinctive
>> infrared signature if it were within several thousand light years of us,
>> and we could see a galaxy of Dyson spheres if there were one anywhere in
>> the observable universe. But we see nothing.
>>
>
> I wonder how water tight the idea is - that Dyson spheres would emit
> infrared radiation?
>
> Maybe dark matter is Dyson spheres whose inhabitants have figured out
> perfect or near perfect complete thermal management, and to whom any form
> of leakage is woefully irresponsible wastage.
>
> Maybe it's a natural evolution that shortly after technologically advanced
> species develop immortality they conclude that sitting around waiting for
> their sun/s to die off or explode is a really bad idea, especially if they
> have the technical means to extend its life span through the complete
> recycling of its emitted radiation.
>
>
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