There is always the possibility that we are all wrong. There is the possibility that this is all a dream. That does not mean this is a dream. Therefore, just because it is possible we are wrong, does not mean we are wrong. Furthermore, just because macroevolution is supported by scientific fact does not mean that God had no hand in it. People act as if both things are mutually exclusive. I don't understand how many Christians cannot see evolution as God's tool for creation.