In terms of how it functions, because no matter how much data you feed an LLM it's still predicting tokens. That makes it incapable of any thought.
>Your average llm is trained on a corpus that vastly exceeds the amount of data I could read in my lifetime.
But that doesn't mean they are useless, they are good at consuming large amounts of data and collating it.
I don't know how correct I am but that's my understanding and it won't change, I feel pretty confident in my simplified view of things because the basics are still there.