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> Did nanotech disappear? No, but the notion of general purpose universal constructors absolutely is dead. Will we have them someday? Maybe, if humanity survives a hundred more years or more,

I thought this was a "we know we can't" thing rather than a "not with current technology" thing?

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Specific cases are probably impossible, though there's always hope. After all, to ue the example the nanotech people loved: there are literal assemblers all around you. Whether we can have singular device that can build anything (probably not - energy limits and many many other issues) or factories that can work on atomic scale (maybe) is open, I think. The idea of little robots was kind of visibly silly even at the peak.

The idea of scaling up LLMs and hoping is .. pretty silly.

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