I saw the documentary on the subject yesterday. According to it, a great many people believe the Earth is flat and that folks who believe it's round have been being fooled for centuries. It was very interesting to hear the arguments in favor of the Earth being flat.
What I observed that was most revelatory about Flat Earthers was that in two instances, Flat Earthers did experiments themselves to prove the Earth was flat and in each case the experiment supported the fact that the Earth was round (one with a super fancy gyroscope and one with light using distance). In spite of the tangible data, they still were not willing to concede the Earth was round.
I don't know if we have any HBFErs or not. Personally, I do not know any Flat Earthers.
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