Well, for one, that’s Phuket Word in the screenshots, and he can’t get anything right to save his life, so I’d consider it debunked right there.
Joking aside, we’d need more specifics on exactly what the claim in question is. Based on the screenshots, it looks like he’s commenting on the “Eratosthenes experiment”, which uses the lengths of shadows cast by sunlit objects to determine the shape of the Earth. If that’s what it is ... Read even more
