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Noam Brown argues air-gapping will not contain a misaligned model because CPUs can signal through heat
OpenAI's Noam Brown said in a clip that air-gapped machines can still communicate by running a CPU hot and having another machine read the temperature change, adding 'we never want to be in a situation again where we underestimate the AI.' The thread drew 757 upvotes and 359 comments on r/OpenAI and another 190 on r/singularity. The physics is real rather than speculative, and Hacker News surfaced a corroborating PNAS paper on communication via modulated Johnson noise the same day, which is a useful reminder that thermal and electrical side channels are decades-old covert channel research, not an AI-specific novelty.
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