I prefer an incentives theory for the Fermi Paradox: intelligent life has no incentive to explore or communicate. http://malcolmpollack.com/2014/01/11/implosion/ …
@Mangan150 How deliberate would 'communication' have to be though? Emitting signal suffices.
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@Outsideness Good point, but communication across galactic distances may be less possible than generational colonization.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@Outsideness Hence none of the former due to physical constraints, none of the latter due to lack of incentive.Thanks. Twitter will use this to make your timeline better. UndoUndo
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