Comments by "Asbestos Muffins" (@AsbestosMuffins) on "How GREY GOO Could Destroy Everything" video.

ya, and that's if there isn't some process that requires engineered materials, like say doped silica which they're not going to be able to replicate it at their scale as you need a special electron gun or nuclear reactor to generate that stuff the only analogue we have for nanobots is bacteria and there isn't any bacteria that grows completely out of control
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seems like the kind of self replicating grey goo nanobots needed for this are impossible otherwise they should have been created now somewhere in the universe, possibly even through biological means like viruses but instead of hijacking cells they directly replicate We have never noticed anything resembling a von-neuman probe even though someone ought to have launched one by now and I think its because replicating electronics isn't easy enough that a machine can reasonably replicate itself without outside assistance there's a lot of issues surrounding machines that small and their ability to move atoms around especially coordinating them in situ
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