That would be all of the creos. If you gave a quiz: "Evolution is random. True or false?" how many creos would pass it? Not many. Declaiming against "randomness" is built into many of the stock speeches, never mind that you can't converge toward fitness randomly. (The mutations are random, natural selection culls non-randomly.) The investment in the canned speeches sitting on the shelf, guarantees that "Evolution is random" cannot be unlearned. It would be too inconvenient.
Not learning or remembering too much is part and parcel of the game. But they have Morton's Demon to help them with the filtering.