Speaking of primary sources, if you ask the chatbot to reference some facts, it might very well make up plausable sounding sources. Maybe the reference doesn't exist at all. Maybe the reference exists but its by a different author. Maybe the reference exists and its the correct author, but the quote isn't found in the book at all, and to verify now you need to get ahold of the book in some form. It just seems like a chore, all to end up not entirely confident that what you have is true signal anyhow.