The problem with the flat earth is there is no working model. Flat earthers can not explain the most basic things we observe happening in the sky and around us. Flat earthers can not even provide a model predicting the actual occurrence of day and night as we experience it on planet earth.
They give us a picture of a flat earth with a moon and sun floating 3000 miles above it. But do not even think to check if that sun in that position could conceivably product the day and night we actually experience. It can not so they should not be presenting a model that outrageously does not work at all.
There are many such faults in the doctrine of the flat earthers and we will go into more details in the articles in this section.