There once was this man that didn't believe that the earth circled the sun. It made no sense to him, because he clearly could see the sun move, rise and set. Therefore it is not possible for the earth to circle the sun and you just ain't gonna convince him otherwise, PERIOD.
He wants to see proof? Would he know what it looks like if he stepped in it? Would he really care? Probably not.
You have a purpose, that is to teach the Indigos patience and tolerance.