Keltham is aware that some people might consider the current topic of conversation to be kind of portentous! This is deliberate! He has an infohazardous chain of thought he is trying to distract them from, and himself too for that matter.
"But let's return to the experiment we just ran. One notable thing about it is that, just based on the experimental results themselves, we can't point to any one of you, and say, this person must've done something insane. We can't point to Peranza," yesterday Keltham gave up and did actual memory exercises to try and remember people apart from their nametags, "and say, her estimate was unreasonably high, her estimate was unreasonably low. We can tell that the two groups were collectively insane but not that any particular person in them was insane."
"Let's go back to considering the estimates for the chance of duck at lunch. Even after we get to see lunch today, can we say anything about who was sane and who was crazy, based on the 12-point scale?"