What’s the last thing you let yourself be wrong about?

I spent three hours yesterday arguing with a nurse about whether 'dyspnea' was a medical term or just a fancy word for shortness of breath. I was certain it wasn’t. Then I looked it up and yes, it is. And I still felt weirdly proud of being wrong—like I’d been stubborn in service of something real. What’s the last time you let yourself be wrong, just to stay in the moment?