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

[Eugen Leitl]

On Tue, Sep 10, 2013 at 08:52:34PM +1200, Andrew Mckee wrote:

> I wonder how water tight the idea is - that Dyson spheres would emit
> infrared radiation?

Completely. I recommend a basic course on thermodynamics.
 
> Maybe dark matter is Dyson spheres whose inhabitants have figured

Dyson spheres refers to circumstellar gravitationally bound
assemblies. Dark matter is something else.

Even if it was suitable for computation (doesn't look that way),
and it would be possible to bootstrap transition from visible
to dark, life never abandons one niche entirely. So, probabilistically
and evolutionary the hypothesis doesn't hold.

> out perfect or near perfect complete thermal management, and to whom
> any form of leakage is woefully irresponsible wastage.

That themodynamics thing isn't optional.
 
> 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.

Sure, they transition to being powered by invisible pink unicorn farts.
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