> 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?
--- 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 firstname.lastname@example.org wars and time. It persuades us that things we do may last and matter." http://discuss.foresight.org/~hibbert/home.html
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