Or, for more fun, e-mail him with some questions about his claims and see how far into a corner he will back himself before telling you to buy his video. That's what I did, and I got him to admit to having no idea what one of the sources for his claims was before he tried the sales tack.

For those who are interested, I asked him where he got the idea that the Russians had a 5:1 superiority in manned space hours, and if it included Project Gemini. He told me it came from a film made during the Kennedy or Johnson administration about the 'missile gap'. When I asked him how he then knew that included Project Gemini (no Gemini flights taking place until well after Kennedy had been assassinated) he told me I'd have to take it up with the guy who made the quote in the film. Conveniently, he couldn't remember the exact title of the film, or from whom he had borrowed it, so obviously I couldn't do what he advised me to. When I called him on this he told me to buy his video.

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"The very powerful and the very stupid have one thing in common: They don't alter their views to fit the facts, they alter the facts to fit their views." The Doctor, Doctor Who: The Face of Evil.