The earth is round if you think about it how can one side of the earth be in darkness while the other side see light. The logic I get from that is if the earth were flat then it would forever be daylight, or we would always be in darkness if there were no sun. The sun and the moon sit still while the earth is constantly moving that’s how the one side of the world sees sunlight while the other side of the world see the moon and darkness.
It’s not an argument it’s a fact but of course you will believe what you want I’m not here to change your mind. I know the earth is round one other factor is the sun rises from the east and sets in the west the is real there is no argument about that all you have to do is go out look and see for yourself.
“True knowledge exists in knowing that you know nothing” – Socrates
I hold this dear and have very few firm beliefs, i like to know all there is know about all the different theories, and love discussing them
Theories are not facts only something one believes to be a possibility not necessarily true. I’m not speaking on theories I’m speaking on facts of which can be proven true.

All the simple arguments have a counter with flat earth! People who believe the earth is flat often also believe that the sun and moon are much smaller and much closer than we are taught. They often will also believe both exist inside a dome. With this model the sun in the west has light that only reaches the west, leaving the east in darkness!