this post was submitted on 25 Feb 2024
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[–] queermunist@lemmy.ml 50 points 8 months ago (6 children)

Grey goo is a fun idea but doesn't really work.

Radiation would cause replication errors in the nanobots, eventually leading to speciation. Before you know it you just have an ecosystem again, with a whole food chain of butt eradicators and paperclip maximizers.

[–] bbuez@lemmy.world 15 points 8 months ago* (last edited 8 months ago)

Butt Eradicators and Paperclip Maximisers

Sorry this will be my band name now

[–] funnystuff97@lemmy.world 9 points 8 months ago

a fellow universal paperclip enjoyer, i see

[–] stingpie@lemmy.world 6 points 8 months ago (1 children)

I don't think this is necessarily true. The reason DNA is so affected by radiation is because it's malleable. It's built out of chemical building blocks that fit like Lego. Gray goo would likely be similar to extremely complex proteins which replicate like a physical version of a quine.

[–] MrFunnyMoustache@lemmy.ml 2 points 8 months ago (1 children)

Flipping an individual bit through radiation is extremely easy, which is why we need error corrections, but despite that, we still get errors... Even if the probability of an error bypassing the ECC is extremely low, over a long enough timescale it will happen often enough to evolve. Especially in space where there is no atmosphere or magnetic field to reduce it.

[–] stingpie@lemmy.world 1 points 8 months ago

I'm not talking about little tiny robots with batteries and computers, I'm talking about precisely formed, microscopic and deformable chunks of metal. That's why I brought up proteins- they do not carry any information themselves, and can sometimes form duplicates of themselves, such as in the case of prions.

[–] metallic_z3r0@infosec.pub 5 points 8 months ago

Grey goo also doesn't work because it'd almost certainly use the same building blocks as life, and in a competition with life, life's probably going to be the winner. Even if it didn't, unless it's doing weird cold fusion subatomic interactions (probably impossible) to make more of whatever element it's composed of, it'll just run out of food in whatever local environment it's in.

[–] CheeseNoodle@lemmy.world 3 points 8 months ago

IIRC the bigger issue is that the nanobots would end up just melting themselves, to avoid this they'd have to work a lot slower, probably at about the rate of a particularly fast acting bacteria.