My secret belief:
As I see it, an ancient book (historically proven to have been written atleast 500 years prior to the coming of Muhammad in custody of two historically well known tribes) described how some very specific and clearly recognizable catastrophic rare events (Sun going dark, temperatures falling, plague arising out of Egypt and killing half the people of the world; volcanoes, earthquakes and tsunamis etc) would occur and usher the coming of a man in Arabia who would unite the Egyptians, Assyrians and Palestinians around the God of Abraham with a single language and initate a successful war against a cruel Roman Empire. In my opinion since it is scientifically and historically provable that these events preceded the coming of Muhammad and also that he united these nations in religion and language; and defeated the Roman Empire, the story of the Prophet Muhammad may well be more than just a fairy tale.
The question that consumes me is what is the statistical probability that this prediction about the future was merely a random coincidence? If it wasnt a coincidence, (personally I dont think was) then it was either the God (as the authors of the ancient book claim) or your alien friends who saw what was going to happen in the 6th and 7th century and told the authors of the ancient book. In any event, it seems more than just a fairy tale to me.
The message would become too lengthy if I posted all the supporting evidence in one post.
regards,
bob