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Notes -
What about Generation Ships?
Which run splat into the telescopes problem— we haven’t seen any anywhere. They’re certainly more feasible than the usual FTL because muh billions of years means that I can ignore known physics.
Seems to me that it may just be unlikely for us to spot any. Theoretically you only need to send one once to colonize a distant place, and they can presumably coast most of the way. Not exactly the stuff that highly visible traffic lanes are made of.
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