Nukehasslefan
Winger
If you believe in a globe then you must be of the understanding that any route, whether it's flight or sea or road has to travel over a convexity.They're not they are based on vehicles travelling the routes and measuring the actual distances
No, they don't but that's factored in as supposed.No, the dstances are based solely on point to point distance, together they PROVE curvature.