Fair enough, I misread your original comment.
The broader point stands that the limitation on creating nuclear weapons and reactors is not knowledge but materials. Even if he himself had a PhD in nuclear physics he still couldn't have built one in his backyard because he wouldn't be able to get the materials. A nuclear physicist can't build a reactor without materials anymore than a pilot can fly without an airplane.
If a nuclear engineer enabled and instructed him, would there not be liability for the hazard? If ml is going to be an expert instructor for nuclear, hacking, bio hacking, virus research, do the peddlers of the ai product escape ethical or legal responsibility just because "its an app?"
Should the library where he read books about physics also be liable?
E.g. look at programming - people who don't know how what a compiler is, are making things that I could only make after a few years into my programming journey.
You obviously get the same results in chemistry or nuclear physics or whatever, the models are heavily trained on code in particular, but if there's a chance that we've reduced the ease of committing certain kinds of crime that were previously gate-kept by knowledge, we should know about it.
I bet the professional would be able to sate the kid's curiosity safely without creating excessive risks.
I've come across detailed instructions on how to synthesize sarin gas on the internet. Anyone who follows those instructions will probably die horribly. I still thought it was pretty interesting.
This is a pretty different argument though. The comment that started this thread was talking about LLMs making potentially dangerous knowledge more available to bad actors, now we're talking about LLMs giving personally harmful advice.
You asked:
>If he had the help of Claude at the time, how much more dangerous would his bumbling have been?
Probably less? Even if you removed all the guardrails from Claude it would've likely told him his reactor plan wouldn't work and that he would have a high chance of poisoning himself and the environment.