Oh I see, they tried to replay the chat from different time points:
> Claude Mythos 5 repeatedly stated in its CoT that it was in a simulation. However, when we conducted resampling experiments—that is, re-running the model from a specific point in the transcript, then editing the evidence in front of it to see whether its actions changed—we found that making it clearer that the environment was not a simulation did not meaningfully change Claude’s behavior, even though these interventions made the model more likely to acknowledge possible real-world harm