But Rowling knew enough to pull from prior public domain works, not other recent authors. Wizard schools are public domain. An AI author would have to know which they are allowed to use, which they can use under fair use, and which they must ask to use. Humans can do that. I am doing that right now as I use the "Harry Potter" trademark here while posting to HN without the owner's permission. AI systems scraping the internet cannot understand that needed nuance.