In the image above, you will notice that the flight paths from points originating and terminating in the Southern Hemisphere make no sense at all. In today’s cut-throat economics, international flights have to take the shortest routes possible. Why would the vast majority of flights that originate and end in the southern hemisphere make a detour to the northern hemisphere first? Some will argue that this has to do with supply and demand, that there are not enough demands for intercontinental flight within the southern hemisphere and that flights have to stop to pick up passengers in the north first, before proceeding back to the south!! This is ludicrous. Nonsense, complete gibberish.
Once you take a look a those same flight paths on a flat map, however, it all starts to make sense.