> "Neither can a CPU, but somehow we managed to make it work way back in the day. Amazing, isn't it?".
I feel this completely misunderstands the problem, and the vast gulf between an LLM and a CPU.
First and most importantly, the set of behaviors of a CPU is extremely constrained, and we have a very simple model for which behaviors are safe and which are not. Writing to addresses between X and Y, executing certain instructions - unsafe; everything else, safe. In contrast, an LLM has a huge array of possible behaviors, and variations of those behaviors, and it's very unclear which are safe and which are not. Is emitting the text "sudo rm -rf /" safe? Yes, in some contexts, such as writing this HN comment ; absolutely not in others, such as generating a command that an agent will execute. How do you check which is which? What if it emits "sudo rm -rf /usr/sbin/../.. ", is that safe?
Secondly, CPUs can absolutely be used to hack other people. Nothing in the permission model helps in any way prevent other computers from being attacked by your CPU. So exactly the part we care most about in AI security is the part that has never been solved, for any computing system ever created.