It is difficult to determine whether people actually have been abducted by aliens. Abductees truly believe they have been taken by aliens into spaceships against their will, examined, perhaps even forced to suffer invasive medical procedures, and then returned to their homes with hours missing from their memories. Yet science seems to contradict the very premise of alien abduction. Readers researching alien abduction should keep in mind the author's qualifications. The views of a writer who is prominent in the field of ufology or skepticism can be taken more seriously than an author who has no experience in the field and is just reporting an investigation by someone else. Readers should also consider an author's bias toward the subject; a writer who includes- and counters-objections to the views being discussed may be more trustworthy than a writer who totally ignores the other side...