It's not. Dig in. Figure it out.
Up above the surface of the earth. Over a flat plane. Without ever having to dip the nose down to compensate for any crvature, because the is no curvature on a flat plane.
Jump off to where?? What do you think is under the earth?? And how do you fall off of an enclosed environment??
Holy Shit, Anon!!!!!! WOW!!!!!!
Why would they lie?? Are you serious?? Are you new here?? Use your brain, Anon.