This is true and no, this post isn't a joke. Imagine all of reality and what-could-be as a circle. O Inside this circle, since we are a primitive species, is an infinitesimally tiny dot. This is all that we know. The atheist states that based on what he knows, God cannot exist. This means that the atheist is creating a definite statement/prediction of how the 99.9% rest of the circle will be based on the .1% he does know. Assuming he is wrong and he is uncertain, God could exist. Assuming he is right and he can 100% predict the full circle from his little bubble, he becomes omniscient - the defining trait of a God. By creating the paradigm there is no God, you either are infinitely misguided or you are infinitely wrong for you have become God.