When I insisted that the Dodgers just won their second Series in a row by beating the Toronto Blue Jays in a 7 game series, Grok told me I was wrong.
When I finally pointed Grok to mlb.com, it admitted that I was right and that there must have been a brain glitch.
I guess I won’t be depending on AI for anything important in the near future at least."
Also validates GIGO (Garbage In/Garbage Out) ... Grok had garbage data resources for your question as you discovered until you pointed it to valid data.
Also funny that you had to "argue" with it like that. I've not experienced that with Grok yet though most of what I use it for is data analysis and I give it the data to analyze.
I've read similar stories like yours though, so I believe you it happened.