So you’re saying if I pointed an LLM, say GPT 5.6 Sol, at a PDF copy of a textbook and asked it questions about something i’m stuck on and don’t understand, it wouldn’t be able to teach me anything?

learning is not a passive activity. likewise an llm can be used in a passive or active fashion.

Only if you already could read the pdf yourself. Otherwise you're learning without structure. Think CS undergrad vs script-kiddie