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This article assumes a lot:

* The aliens who possess the technological ability to reach Earth are the ones who built it and evolved alongside it. Who's to say they didn't take it by force?

* FTL is something that must be developed through technology. (i.e. discounting the possibility of naturally occurring wormholes)

* The aliens have no inherent desire for exploration

Yes, I've watched too much Sci-fi :)



...also, if you're traveling FTL, then time travel isn't that much of a stretch. So, ya.




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