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Aliens here, aliens there

David wrote:

>Interestingly, many people say that interstellar travel is
>so amazingly difficult (and we are seeing part of it) that
>it won't be accomplished for millenia, if at all.  One of
>the responses to the Fermi Paradox. But lately I think we'd
>agree that interstellar travel is, in fact, possible, but
>at horrendous cost.  If we had a pre-existing deceleration
>system (i.e. cooperative aliens in the target system),
>however, interstellar travel may actually not be too difficult.
>It makes me think of an area of the galaxy where civilizations
>may arise frequently, and there is some sort of trade route
>set up with masers.  You could travel easily between stars if
>there were lots of aliens around... But, if (like us) you
>seem to be alone, you might be stuck at home.  Interesting
>paradox - if there are places to colonize, you can't go there.
>If everywhere is filled up already, you can go there.

There will be a day that we can deform space-time at will, then
deceleration won't be a bigger problem than accelerarion.

                                          Timothy van der Linden