From ChatGPT...
This quote is often attributed to the Irish playwright and novelist, George Bernard Shaw. However, it is important to note that the exact wording and phrasing of this quote may vary in different sources.
Having been playing with ChatGPT for the last half hour I have no confidence that answer is true.
I've been asking about the outcome of a Cheltenham race. First it denied the race even existed, despite the answer quoting its full name (which I hadn't!).
Then, when I said yes it does, it apologised for the confusion and gave me the name of the winning horse and jockey. Both were wrong.