> which is like having someone take an entire physics course, writing down everything they learn on post-it notes, then you ask a different person a physics question, and that different person has to skim all the post-it notes, and then write a new post-it note to answer you

This is the best summary of an LLM that I’ve ever seen (for laypeople to “get it”) and is the first that accurately describes my experience. I will say, usually the notes passed to the second person are very impressive quality for the topic. But the “2nd person” still rarely has a deep understanding of it.