From: Alintelbot@aol.com
Date: Sat Jul 24 1999 - 18:38:05 MDT
Eugene writes:
>> I don't think this is the _only_ sort of alien technology we should be
>> looking for, but it's certainly a good scenario. List members tend to
assume
>I think it is exactly the right sort of alien technology to look for.
>Only this kind of civilisation creates huge, durable
>artifacts/high-visibility signatures, and quickly at that. Such
>civilisations are extremely expansive (because they get selected for
>aggressive expansiveness while propagating across the cosmic Petri
>dish).
If you mean that the sorts of civilizations you describe would be the
_easiest_ to spot, due to their expansive growth, etc., then I agree with
you. My argument wasn't that we shouldn't be keeping our eyes out for such
civilizations, merely that I think limiting ourselves to nanotech
civilizations is just that--limiting.
>A civilisation below nanotechnology level is essentially
>incapable of interstellar travel.
Nanotech would be extremely useful for an intstellar mission. But
_"essential"_? Agreeing whole-heartedly with your statement "Evolution is
nonlinear, yet coevolutionary factors favour intelligence emergence," I think
it's a contradiction to expect every single exploratory civilization to fit
the paradigm you propose.
>I don't consider >10^4 year journeys
>in vast ecology bubbles to be interstellar travels.
If you can get to one star to another, it's an instellar voyage, regardless
of what technology was used to get there.
>>that "exotic" ventures like interstellar colonization will necessarily rely
>>on all kinds of fancy nanotech, but don't forget that the idea of traveling
>It's not fancy, it's simply economical.
Certainly. But I'm not willing to make the _huge_ leap that every single
interstellar civilization will rely on nanotech. "Variance" may well prove
to be the key word, when the history of the galaxy is written.
>1) We cannot build stellar ramjets yet 2) anything we send out today
>will be very quickly overtaken by next-generation craft, because we're
>well underway to turn into a supertechnology civilisation.
Yeah, they would be overtaken. But what if the reason they left their home
system was due to a cataclysm (or political/sociological stagnation) that
stopped the technological advance that would have made nanotech a practical
reality? What is an alien culture had some strange taboo against using
nanotech for certain functions (i.e. spaceflight)? Et cetera. I think your
argument suffers from a premature allegiance to the interstellar diaspora
scenario.
I'm not arguing that your ideas are faulty, and I agree that we are becoming
a suertechnology civilization (and _will_ become one--barring accidents).
What I argue is the _inevitablity_ of this scenario, which is one of so many
the list could fill volumes.
--Mac Tonnies
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