From: Robin Hanson (hanson@econ.berkeley.edu)
Date: Thu Jun 10 1999 - 14:05:22 MDT
On 6/10/99 Eliezer S. Yudkowsky wrote:
>Well, as soon as I read that news article, just one thought passed
>through my mind: "So much for the black-hole limits on Jupiter Brains."
> David Zindell's "computational origami" is looking more plausible all
>the time. You fold up a bunch of Jupiter brains into little Tardis
>pockets, and then they all communicate with each other in this
>meta-Jupiter brain. ...
>(Who was talking about the fundamental limits of physics during the
>Singularity Colloquium a year back? I want to hold my monthly gloat.
Actually, when I read Van Den Broeck's warp drive paper yesterday, my
main criticism was that he hadn't modeled actually putting anything
inside his pocket. Sure it has a diameter of 200 meters, but it is
modeled as being totally empty. Since he calcualtes he needs a few
grams of negative mass region, I doubt if he could put much more than
a few grams of positive mass inside and keep his approximation
reasonable. (I suspect more mass would just collapse to a black hole.)
Also, since the surface area is only 2000 plank lengths, bandwidth
between it and other places would be severely limited.
So maybe you could make a few grams filling 200 meters fly at
warp speed, but that's far from a jupiter brain.
Robin Hanson
hanson@econ.berkeley.edu http://hanson.berkeley.edu/
RWJF Health Policy Scholar FAX: 510-643-8614
140 Warren Hall, UC Berkeley, CA 94720-7360 510-643-1884
after 8/99: Assist. Prof. Economics, George Mason Univ.
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