I argued with flat earthers for 2 hours before I got why I was wasting my breath
I kept throwing the same curvature math at this guy in a Facebook group and he just kept moving the goalposts, then it hit me that no link or number was ever going to land because he wasn't there to be convinced. That was about 6 months back and I have not touched a single debate thread since. How do you all decide when a back and forth is actually worth your time?