I’m a bit late to the party on this one, but the irony, if it exists, is that many flat earthers use that very ‘argument from ignorance’ approach time and time again. In addition many flat earth arguments preclude the use of facts they don’t like, just as in this thread. For example if one is debating the subject of space travel, though why it needs debating is beyond me, the enormous amount of evidence that supports its existance is somehow rendered null and void and the debate becomes bogged down in arguments based on both ignorance and a misunderstanding of both science and the facts. While the original question is indeed a joke it does cast some light on how the flat earth mentality works.