Alberto Monteiro wrote:
>
> David Hobby wrote:
> >
> > Comparing starships from different universes is difficult,
> > to say the least.
> >
> I think it's impossible. Take the most powerful ship, and it
> loses to Heinlein's Gay Deceiver, who can jump back to
> a time _before_ the construction of that other ship and blast
> its factory out of existence.
>
> Alberto Monteiro
It depends what model of time travel you are using.
I like a multiple worlds interpretation, since there are no
paradoxes in it.
Heinlein's ship goes back, destroys the other ship's
factory, and goes forward again. Now it is on a line without
the other ship. But from the other ship's point of view,
Heinlein's ship goes back and never returns (i.e. disappears).
That sounds like a draw, at best.
---David
Why exactly SHOULD the entire line with the other ship in it
disappear when Heinlein's ship mucks around in its past?
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