OpenAI, Google and Anthropic are struggling to build more advanced AI

I wonder how much this has to do with a fluency plateau.

Up to a certain point, a conditional fluency stores knowledge, in the sense that semantically correct sentences are more likely to be fluent… but we may have tapped out in that regard. LLMs have solved language very well, but to get beyond that has seemed, thus far, to require RLHF, with all the attendant negatives.