Although mostly horrified / entertained watching a flat-earther documentary a while back with my teenage son .. I was also kind of impressed at one point when the flat earthers did a measurement with a laser over some kilometers to 'prove' the flatness of their landscape.

Needless to say the experimental results differed slightly from their theory. But what struck me is, they were actually doing science .. which is wonderful. I remembered thinking if only our local schools would do a little bit of science, or math for that matter..