[ExI] Old Chemically Mature Galaxies and Fermi Paradox

[Eugen Leitl]

On Sat, Nov 05, 2011 at 07:19:14AM -0700, The Avantguardian wrote:

> Although I do admit gamma ray bursts suck when they are pointed your way, 
> why would that pose a threat to shielded machine-phase life? 

They don't. We're looking at preexpansive life, which is
terribly fragile.

> I think a more elegant solution is that no sufficiently intelligent 
> species would waste the energy communicating at interstellar distance 
> using a spherical wave. Unless the species is so succesful, widespread, 

It's not wasted if it's a spherical wavefront of individuals.

> and energy abundant that it is more economical for them to communicate 
> by spherical wave rather than by one or more directed tight- beam 
> masers or modulated IR lasers, or something similar.  Maybe once 
> "I Love Lucy" reaches them, the will send a greeting to Lucille 
> Ball or some such.  In any case, GRBs are a selling point for 
> uploading that I never considered before.

Machine-phase has many selling points. Being harder to kill is one
of them.

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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