Debunking 9/11 Myths does a grand job of explaining such popular conspiracy-website mainstays as how a 125-foot-wide plane leaves a 16-foot hole in the Pentagon. Answer: it didn't. The 16-foot hole in the Pentagon's Ring C was made by the plane's landing gear. But the problem isn't scientific, it's psychological: if you're prepared to believe that government agents went to the trouble of researching, say, gay rugby player Mark Bingham's family background and vocal characteristics so they could fake cellphone calls back to his mom, then clearly you're not going to be deterred by mere facts. As James B. Meigs, the editor-in-chief of Popular Mechanics, remarks toward the end of this book, the overwhelming nature of the evidence is, to the conspiratorially inclined, only further evidence of a cover-up: "One forum posting that has multiplied across the Internet includes a long list of the physical evidence linking the 19 hijackers to the crime: the rental car left behind at Boston's Logan airport, Mohammed Atta's suitcase, passports recovered at the crash sites, and so on. 'HOW CONVENIENT!' the author notes after each citation. In the heads-I-win-tails-you-lose logic of conspiracism, there is no piece of information that cannot be incorporated into one's pet theory."