The topic derailed so much... I want to go back at the start. Take an airplane, and fly towards the edge. You claim you cannot because the earth force you to travel in circle. I dont understand this statement. We have a space, a flat earth. Are you saying that is phisically impossible to fly towards the edge because of strange forces? I think this is an incredibly simple experiments to watch what's going on near the uknown edges. Take a jumbo jet and head it straight in one direction, does not matter if you go towards south pole. Or are you claiming that is phisically impossible to go straight, you have to go in circle?