> A flat-earther would just tell you that you're not able to maintain a straight path over such long distances without relying on external guides that would definitely put you on curved paths.
Do flat-earther reject the existence of LASER, too?
Flat-earthers don't accept that a flat plane implies infinite line of sight (especially at sea), so who knows.
Flat-earthers don't accept that a flat plane implies infinite line of sight (especially at sea), so who knows.