I can't call them ignorant or their beliefs naive as the Flat Earth society is made up of very educated and civilized people with professionals in different fields of life. However, I can say that every member of the group probably shares one trait or characteristics, I don't know if there's a general term for it, it's the feeling of wanting to be different from the majority as a way of being known, recognized and associated with activities which has affected the lives of many.
I'll choose only the sun as focal point in contradicting their founding principles. Science through advance technology has proven the fact that the sun is 1 million times the Earth mass put together. It's 1,287,000 times bigger than a solitary earth. The sun's diameter is 1,392,000 km compared to the Earth's diameter of only 12,742 km.
Can they please explain to me how certain areas, regions and countries shields themselves from the sun if the Earth was flat. I mean, why don't the entire earth experience the same temperature at any given time if it were flat and given the known fact of the size of the sun.
I just might join the Flat Earth society if they can provide a valid explanation to my question.