Seriously, how about a reasonable number of questions? Or even using the search function?
1, 2, 3 rely on the Earth being flat, 4, 5, 6, are in the FAQ, 9 is bizarrely philosophical and irrelevant to a lot of FEers, 10 and 11 are meaningless until you make ceratin assumptions (ie: theories being relevant, the forces at play forming the Earth comparing to those on a bubble), 7 and 8 have FE answers and DE answers, the latter taking too long to explain.
For an example clear answer, 1: space travel is impossible under the Dual Earth FET, it started for political gain, now no one wants to admit to being the first to have failed. There's no Flat Earth conspiracy, just a space travel conspiracy.