It's not a fools errand, you can't know definitively but you can have a level of confidence. It's quite easy to invent a sentence that's never been uttered bef

It's not a fools errand, you can't know definitively but you can have a level of confidence. It's quite easy to invent a sentence that's never been uttered before, it's also fairly easy to hit the limits of the internet's knowledge in pretty much any complex discipline that's not software engineering. And it's apparent when you speak to ChatGPT, he will hallucinate a lot to compensate for niche topics it doesn't know much about. Occam's razor wouldn't point to ChatGPT having omniscient knowledge of all things ever thought of and that will ever be invented.