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Re:Beyond “Fermi’s Paradox”: The Percolation Theory Hypothesis by tsimionescu on Friday December 25, 2020 @12:17PM (#25537653)
Then we're back to the energy requirement, yes.

I wouldn't even be convinced then that we have the technology today. Any repair system would necessarily suffer from the same kinds of failures.

Re:Beyond “Fermi’s Paradox”: The Percolation Theory Hypothesis by adrianN on Friday December 25, 2020 @12:22PM (#25537682)
I think the amount of mass lost is small enough that extra provisions can be carried around. For anything else you just have to fight entropy. Given enough energy you can probably do that.