We know that LLMs are token pattern predictors because that's literally how the algorithm works. There have been plenty of explanations by the paper authors an

We know that LLMs are token pattern predictors because that's literally how the algorithm works. There have been plenty of explanations by the paper authors and by other sources, e.g. 3blue1brown's summary at https://www.youtube.com/watch?v=LPZh9BOjkQs https://www.youtube.com/watch?v=LPZh9BOjkQs. That LLMs are "glorified autocomplete"(sic) is beyond dispute. The burden is on the LLM promoters to back up their frequent claim that the brain is the same as an LLM and they are abjectly unable to do it. (Maybe they should have their LLMs write the proof for them if they are unable to figure it out themselves? Good luck with that.)