o.k, sorry. i admit that wasn't very clear.
you claim that you know the earth "is" flat, now, the operative word here, "is", to me seems to be very ignorant, like you are claiming it IS truth, (i would say also that the word truth , is like the word god- its a phantom of language, truth does not exist), you can only say "it appeas to me" instead of "is". you say looks can be decieving, the word "looks" is a very ambiguos word, now i would like to make this word more specific. with your agreement i would like to change it to "my personal interpratation of what i see or have been told" may appear decieving.
so now, my personal opinion is this,"there seems to be "proof" for both theories, so i'll never regard either one as the "truth," but i will remain open minded, and keep looking at both sides of the argument"
this is called model agnosticsm
at the moment though, the "proof" of how the sun appears to move, or what i have been taught, fits my observation of it, so i am inclined to hold the model "the earth spins while revolving around the sun, makng the sun appear to rise and set, at opposite ends of the earth" but in either case (whether the earth is flat or spherical[!- not round]) the suns apparent movement doesnt prove or disprove either.