First of all, I suggest you red the FAQ and only come to the forums with questions that are unanswered or insufficiently answered there. Second, if someone were to fly to the Ice Wall, the guards posted there would likely capture them and blackmail/force them to go back and say they saw the Antarctica of an RE. Third, light does not travel in a perfectly straight path. Its bending is what causes the horizon to appear to have curvature, and only certain places to get sunlight. Additionally, it the instruments on planes can be made to be slightly off, leading to travel times roughly equivalent to those of the RE. It only takes a few people to convince engineers that what they are doing is accurate, as well as to convince scientists that phenomena they observe point to something other than what they point to with just a little misinformation. Rule #1 of conspiring: Let as few people as possible know the truth, to reduce the chances of the truth being revealed to the sheeple. That is what they did with 9/11, and that is what they are doing with the RE conspiracy. What makes you think it would be that hard, with the amount of power that they have? (PS: sorry for not having my counterarguments in the right order. I was kinda writing as I thought of arguments.)