Yes
most of my work use of ChatGPT does in fact save me time but, every so often, ChatGPT can still bullshit convincingly enough to waste an hour or two for me
bartread on Hacker News
In the thread “Notes on OpenAI's new o1 chain-of-thought models”, replying to this comment
Helped: General work usage saves time.
Got in the way: Convincing errors in areas beyond user's knowledge.
… The real danger zones are areas that lie at or just beyond the edges of my own knowledge in a particular area. I'd say that most of my work use of ChatGPT does in fact save me time but, every so often, ChatGPT can still bullshit convincingly enough to waste an hour or two for me. The balance is still in its favour, but you have to keep your wits about you when using it.