I wrote before about my embarrassing time with ChatGPT during a period (https://news.ycombinator.com/item?id=44767601) - I decided to go back through those old 4o chats with 5.2 pro extended thinking, the reply was pretty funny because it first slightly ridiculed me, heh - but what it showed was: basically I would say "what 5 research papers from any area of science talk to these ideas" and it would find 1 and invent 4 if it didn't know 4 others, and not tell me, and then I'd keep working with it and it would invent what it thought might be in the papers long the way, making up new papers in it's own work to cite to make it's own work valid, lol. Anyway, I'm a moron, sure, and no real harm came of it for me, just still slightly shook I let that happen to me.