>>13273989>and radar (at least in daylight) would be unnecessary.not really. you can't see forever becuase many reasons. one being, that your eyesight is limited. so you need certain instruments to detect objects if they are beyond your eyesight.
>Are you claiming that planes or flight aren't real?no. but if earth was a ball, a plane must deep to accomidate for earth's curvature. if it's flying level, then it would end up in space. look pic rel. you can't fly LEVEL from continent to continent on a ball earth.
