As other reviewers point out, this work could have been much stronger than it is, had the author even attempted to apply a veneer of scientific reasoning; instead, he jumps into metaphysical digressions, endlessly referring to his previous works and theories. A disjointed, unscientific exposition which simply does not work. One would do well to read the earlier, far superior work by Marc Davenport, 'Visitors from Time'. At least he used facets from actual documented sightings to make his case. It is also better written than this confusing mess.