of UFOs. Convinced that a small percentage of reports cannot be explained in conventional terms, he rejects the condescending skepticism of mainstream science as well as the "dangerous credulity" of some UFO proponents. Because the extraterrestrial-origins hypothesis has some flaws, he thinks UFOs are likelier to be demonic manifestations originating in some spiritual dimension. Philosopher-theologian Kenneth Samples' chapters consider various types of UFO experiences, including abductions, ongoing contact with aliens, and UFO cult organizations; and political scientist Mark Clark addresses government cover-ups of and conspiracies about UFOs. Although the book constitutes one of the more rational attempts to correlate the scientific and the scriptural, secular humanists may fail to be convinced, especially since it asserts that many UFO witnesses have participated "knowingly or unknowingly, in occultism or occult-related activities." Three appendixes about the conditions essential to life on Earth imply that its development is so rare as to be unique. George Eberhart
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