The experiment is flawed and doesn't prove anything either way. There's no way[1] to know that whatever landscape they tried this on doesn't have a subtle upwa

The experiment is flawed and doesn't prove anything either way. There's no way[1] to know that whatever landscape they tried this on doesn't have a subtle upward curve that might just as easily "prove" the flat earth hypothesis. It's amusing in the context of that documentary because they do a 180 in real time because of the results they get. But just because the experiment showed the correct result doesn't mean it's well designed. 1. No way that a flat earther wouldn't dismiss, there's no way they'll trust say a USGS survey.