You don't even need to get that complicated. Just look up flight times from Boston to London to Moscow to Alaska to Boston. You can go in one direction (or the reverse) and right back where you started. Now that could be explained by having a flat Earth centered on the North Pole. The only problem is that you can fly from Southern Argentina to South Africa to Australia to Southern Argentina and it works the same way in roughly the same amount of time. If a flat Earth were centered on the North Pole that Southern trip would take many times longer and vice versa for a flat world centered on the South Pole for a Northern trip.
If you were smarter, you wouldn't even need to do that. You could just plot flight paths. They all follow the great circles to get from point A to B on Earth the quickest, shortest way. That only makes sense on a round body. Unless the entire airline industry is on it too and is willing to sacrifice billions of dollars in gas and delayed flights just to trickily take round routes
If you were smarter, you wouldn't even need to do that. You could just plot flight paths. They all follow the great circles to get from point A to B on Earth the quickest, shortest way. That only makes sense on a round body. Unless the entire airline industry is on it too and is willing to sacrifice billions of dollars in gas and delayed flights just to trickily take round routes
