Robert Carroll has compiled an impressive collection of short articles defining and explaining ideas that warrant careful critical examination; that is, ideas deserving a thorough going over by a thoroughgoing skeptic. Carroll pulls no punches in his criticism of whacky cultish ideas, yet he does not brazenly skewer all sacred cows. Rather, he sets out to expose a wide range of ideas to the light of healthy skepticism, exposing blatant charades for what they are, explicating ideas that are often misconstrued or irrationally rejected, and casting doubt where doubt is due. I believe he largely succeeds in these endeavors.
The book is organized like a dictionary with an alphabetical listing of various words that Carroll sets out to explore in depth. I think the book is better described as an encyclopedia, however, because of the length and style of the articles, which are not terse definitions, but mini-essays. Here is a sampling of the "A" words to give you an idea of the range of topics that Carroll addresses: acupuncture, agnosticism, alien abductions, ancient astronauts, angel therapy, anthroposophy, argument from design, argument to ignorance, aromatherapy, astral projection, astrology, atheism, automatic writing, and avatar. (This is roughly one third of the entries under "A"). Even within this short list there are some whacky ideas (angel therapy and alien abductions), some borderline ideas (acupuncture and anthroposophy), and some words that are simply in want of a careful definition (agnosticism, atheism, and avatar). Carroll deals with them all rather even-handedly, at least from the perspective of a naturalistic worldview. Other topics covered in the book include Bible codes, Bigfoot, chiropractic, confirmation bias, crystal power, ESP, holistic medicine, karma, levitation, magnet therapy, miracles, Noah's Ark, etc. I think Carroll did a rather good job in selecting his topics as they cover such a panoply of beliefs; he is just as likely to find fault with one cult as any other.
With respect to Carroll's intentions, as he states in the introduction, "this book is a Davidian counterbalance to the Goliath of occult literature. I hope that an occasional missile hits its mark." Thus, Carroll apparently intends to instill a bit of healthy skepticism into those minds willing to accept it. And who might that be? Carroll identifies his intended audience as those uncommitted to occult claims (open-minded seekers), those who believe in them but have doubts (believing doubters), those who are more prone toward doubt than belief (soft-skeptics), and those who strongly disbelieve in occult ideas (hardened-skeptics). But, "The one group this book is not aimed at is the 'true believer' in the occult. If you have no skepticism in you, this book is not for you." I suspect that Carroll is quite right in his assessment; if you are an ardent believer in any of the cultish ideas that Carroll debunks, then you are unlikely to find his arguments compelling; The reason for that, of course, remains open to debate.
Here are a few short snippets from Carroll's entries. Under "acupuncture," Carroll first describes the history of the technique, its variants, and the types of claims made for it. His brief analysis suggests that there is little reason to believe that the anecdotal successes of the technique amount to anything more than regression toward the mean. In Carroll's words, "An alternative treatment such as acupuncture is sought only when the pain is near its most severe level. Natural regression will lead to the pain becoming less once it has reached its maximum level of severity." Under "agnostic," Carroll carefully defines the often-misunderstood word, explaining that "The agnostic holds that human knowledge is limited to the natural world, that the mind is incapable of knowledge of the supernatural. Understood this way, an agnostic could be either a theist or an atheist." Under "numerology," Carroll explores the idea of ascertaining a person's characteristics from numerical data based on name and birth date, and exposes it as a total sham. He links the perceived success of numerology to the "Forer effect", which he defines in another entry as "The tendency to accept vague and general personality descriptions as uniquely applicable to oneself without realizing that the same description could be applied to just about anyone."
This is a fun book to read, both because of its wide range of topics, and because of Carroll's no-nonsense pragmatic approach. I hope that the book will cajole at least a small minority of readers into critically examining some of the outlandish beliefs that surround us, and to wisely insist on something more than anecdotal evidence, wishful thinking, or arguments from ignorance before accepting them.