Iván Arcuschin Moreno

I'm fully funding this. I think that understanding, detecting and potentially mitigating chain of thought unfaithfulness is a very important problem, especially with the rise of o1 models. I think the approach taken here is reasonable. I think Arthur is fairly good at supervising projects, and that under him Jett and Ivan have a decent shot of making progress, and that enabling this to start a month earlier is clearly a good idea. I know Arthur well, and got a moderate amount of data on Jett and Ivan's ability to execute on this project in my MATS training program.

Conflicts of interest: Jett and Ivan were in my MATS training program (but no longer are, and I would not be involved in this project going forwards). I manage Arthur and he works on my interpretability team at GDM (but he is doing MATS in a purely personal capacity, and if anything I'm incentivised to *reduce *his amount of extra-curricular distractions :P ). Overall I don't feel particularly concerned about conflicts of interest here.