Okay: I'm going to stake out a strong position: my longheld conviction is that humanity will never encounter sentient extraterrestrial being because life in this universe is exceedingly rare & distances are vast. Let's see whether this holds up.
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I'll go a bit further and say that, while this can never be proven, it's quite possible that earth is the only planet in the universe ever to house sentient life.
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Project Blue Beam!
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Russian drones (or Chinese)
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I’m betting on Von Neumann machines, long term.
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Question is, where are they?
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