From: hibbert@netcom.com
Date: Fri May 04 2001 - 15:20:28 MDT
Eugene.Leitl@lrz.uni-muenchen.de said:
> If things fly apart in an accelerating manner, it doesn't matter
> whether the density will be eventually zero, or almost zero. It's
> enough to know that you can't get theah from heah. Welcome to
> Gilligan's Island. Hope you like it here, for you're going to stay
> here for a looong time.
I remember some of Tipler's arguments, and the discussions we had around
the topic, though I won't claim to have worked through the physics in
detail. My recollection is that if you can make local areas with
sufficient density, you can get a lot of work done. If global density goes
to zero, I think I remember that it gets hard to gather sufficient material
anywhere. If the global density asymptotically approaches some non-zero
limit, I thought there was a chance to make islands of sufficient density.
Am I misremembering the argument? Did Tipler assume (or conclude) that you
needed to have *all* the material in the universe collapsing in order to
get omega-point effects?
Chris
---
C. J. Cherryh, "Invader", on why we visit very old buildings:
"A sense of age, of profound truths. Respect for
Chris Hibbert something hands made, that's stood through storms and
hibbert@netcom.com wars and time. It persuades us that things we do may
last and matter."
http://discuss.foresight.org/~hibbert/home.html
This archive was generated by hypermail 2.1.5 : Sat Nov 02 2002 - 08:07:29 MST