Recently a journalist contacted me with three or four questions about dowsing. I've written about dowsing several times, and last year I wrote a CFI blog about a conversation I had with a dowser. Here's a transcript of the interview: 1) Why do you believe dowsing is fraudulent? Do you think dowsers are purposefully fraudulent or just deluded? I don't believe dowsing per se is fraudulent--that is, for the most part it's not a scam, hoax, or intentional deception. Instead it's a form of self-deception that often convinces others. There's no intent to deceive, it's more of a mistake or misunderstanding. I've met many dowsers over the years and without exception they have been credible, down-to-earth people. They seem sincere because they are sincere: they really believe they have this power, and have convinced themselves over and over with their results. In this way they often convince other people, especially those who haven't researched skeptical or science-based explanations. As for its origins, in her book Divining the Future: Prognostication From Astrology to Zoomancy, Eva Shaw writes, "In 1556, De Re Metallica, a book on metallurgy and mining written by George [sic] Agricola, discussed dowsing as an acceptable method of locating rich mineral sources." This reference to De Re Metallica is widely cited among dowsers as proof of its validity. However it seems that the dowsing advocates didn't actually read the book because it says exactly the opposite of what they claim: Instead of endorsing dowsing, Agricola states that those seeking minerals "should not make use of an enchanted twig, because if he is prudent and skilled in the natural signs, he understands that a forked stick is of no use to him." So even 400 years ago, dowsing was recognized as not being useful. You can read the rest HERE. You can find more on me and my work with a search for "Benjamin Radford" (not "Ben Radford") on Vimeo.