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Counter: the [Robin] Hansonian universe. ('Grabby Aliens' in his unfortunately chosen IMO nomenclature). However rare life is, and however rarer intelligent lif

Counter: the [Robin] Hansonian universe. ('Grabby Aliens' in his unfortunately chosen IMO nomenclature). However rare life is, and however rarer intelligent life is, it expands to fill galaxies, even allowing for lightspeed limitation.

pfdietz 2y ago
In that case, they wouldn't be in our galaxy, since the Solar System and Earth weren't taken over by aliens long ago.
lupusreal 2y ago
We have one example of clever techno apes in our universe, but no examples of life expanding beyond it's originating planetary system.