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A comment on Lost Advanced Civilizations. Parent comment

Re:Lost Advanced Civilizations by LargoLasskhyfv on Wednesday August 19, 2020 @11:40AM (#24211563)
When we assume K3 capabilities, why don't we assume they dump their waste emissions away into something like (artificial even?) black holes? Maybe they are shy and afraid of the intergalactic "Dark Forest"? ( https://en.wikipedia.org/wiki/The_Dark_Forest )
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Re:Lost Advanced Civilizations by pfdietz on Wednesday August 19, 2020 @12:33PM (#24212336)
The basic problem with that idea is black holes are too small. The amount of low temperature radiation that one could dump into them would be insufficient.
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