I understand what you mean but there is a depth of thought that is hard to capture outside a book. The main problem is that so many books are really just essay

I understand what you mean but there is a depth of thought that is hard to capture outside a book. The main problem is that so many books are really just essays or papers that get stretched to 300 pages because that is what the publisher wants. A great book I don't think has this problem. I don't see a separation though between books, LLMs, papers and audiobooks. I would add youtube lectures in there too. They are all valued friends in learning to me.