I fail to see how this makes us different from LLMs. LLMs are a bunch of computation running on silicon in order to predict the next word, and out of that all

I fail to see how this makes us different from LLMs. LLMs are a bunch of computation running on silicon in order to predict the next word, and out of that all sorts of behavior arises, including intelligence, insigt,creativity, humor, and confabluation. Human brains are a bunch of computation running on carbon in order to <<X>>, and out of that all sorts of behavior arises, including intelligence, insigt,creativity, humor, and confabluation. We don't really know what <<X>> is. Why couldn't <<X>> be prediction as well?