This is not a book of answers because nobody on any side of the issue really knows what UFOs are. Instead it is a book of questions starting with... What if UFOs are real? What might this mean for Humankind? Do UFOs represent "nuts and bolts" craft piloted by sentient beings from other civilisations in space? Are they visitors from another planet? Are they human-like or human time travellers or beings from some other realm presently unknown to science? Recognition of this could profoundly alter our understanding of the universe and our outlook on life. The analyses and speculations are intended to encourage thought and discussion. The concepts explored here need to be critically examined and measured against the still unfolding UFO manifestation. Meanwhile we need to know what has been credibly reported, what possible explanations there are, and what it might all mean. Why did the CIA run a security clearance on this author without his knowledge or consent? The contents of UFO reports have become increasingly bizarre: stories of alien creatures abducting humans and subjecting them to physical examinations have multiplied. The beings who sometimes appear more like apparitions than solid entities, display almost magical powers, including levitation, telepathy, movement through solid matter, and cause electrical malfunctions. Even if the abduction reports are imaginary, why would intelligent beings repeatedly hover over installations and then dart away, for no apparent purpose? Why would they buzz human vehicles, take soil samples and all the other repetitive actions year after year without doing something to remove all doubt about their nature and purpose? Why do they continue to dazzle us with exotic displays but not make open contact or whole communicate something definite to us?