Re: Many Fermis Revisited

From: Russell Standish <>
Date: Mon, 13 Jan 2003 15:09:20 +1100 (EST)

Tim May wrote:
> Imagine what will happen if strong MWI communication happens in our
> universe, our branch:
> -- presumably access to all of the manifold knowledge from every
> universe which has done science, engineering, etc.
> -- vast amounts of technology (as some universes are "ahead" because
> the Newtonian revolution happened in 535 A.D., etc.)
> -- like a quantum computer, every calculation run a bunch of times,
> answers already known

I grant this, but nevertheless trying to extrapolate possible
technologies out a billion years or so in the conventional Fermi
Paradox is also a tad meaningless. About all we can say is that from
energetic reasons, civilisations are unlikely to expand much faster
than 1 order of magnitude slower than the speed of light, hence your
bound of 100 million light years away.

Of course if exotic technologies like warping spacetime were
possible... but then this is probably about as unlikely as time travel
or MWI communication, and just as subject to Hal Finney's argument,
namely that information on how to effect a wormhole must travel at
subluminal between the two end...


A/Prof Russell Standish Director
High Performance Computing Support Unit, Phone 9385 6967, 8308 3119 (mobile)
UNSW SYDNEY 2052 Fax 9385 6965, 0425 253119 (")
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Received on Sun Jan 12 2003 - 23:10:45 PST

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