ames, I think that is one of the cornerstone arguments of the flat earth people. But no one takes them seriously – and on a much different scale from the kind of stuff Joseph is bringing up.
As I mentioned earlier, all the arguments for and against orbital centricity are grounded in our basic premises of physics (e.g. gravity), which may well be fallacious. The Earth could be the center of the universe, if we dispel our preconceived notions of physics. A flat earth is a bit more extreme than that.