This blind man says ‘no one has ever done this; He must be from God! He opened my eyes, He created new eyes, so He must be from heaven, because God alone is The Creator. Satan can destroy, and falsify, but only God can create. He has opened my eyes, and you don’t know where He’s from?’ When unbelief investigates a miracle, it will come up with the conclusion that it starts with, typically completely unaltered, even if it has to function in an irrational way.