A belief is just that, A fact is used to believe . Again, facts show science wins this one and if someone wishes to act like a star or radical they can by pretending to go against the grain. I do not give credence to things that are not real. The Satan Church headquartered in England, is considered to believe in Satan but that is just not the case. They are theist who used the name satan, which all realize is imaginary, to just stir the christians.

What I find interesting is why the ancient philosophers didn't posit a cylindrical Earth when they saw the round shadow on the moon.

Smart guy. Great deduction.

[popsci.com]

The idea that most people used to believe the earth was flat is also a myth. This myth was perpetuated by a book written in the 19th century. Not only has the roundness of the earth been known at least since the Ancient Greeks (Pythagoras, Anaxagoras, Aristotle), but every sailor knew it. The top sail of a ship is always seen first, the stars are different in the Southern Hemisphere than they are in the Northern Hemisphere, and the existence of time zones. Also, the earth's shadow on a lunar eclipse, and the fact that you can actually see the earth's curvature on a high mountain. The ancients were not so dumb as we like to think.

There is no way to debunk flat earth as it does not exist. Can we debunk the easter bunny? No, it is fantasy from the beginning.