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Scott Forrestmost successful scammers are fairly intelligent (I'm obviously not talking about K Whitmore) and their minds work in devious ways that an honest person's would not, so the theory you are posing actually works in reverse. That's why you here about "successful" thieves being hired to teach people how to protect themselves, etc ("Catch me if You Can"). What we really need is one of the successful "card doctor" board members to "turn honest" and write an article on how they ply their trade and the scams we should watch out for.
Shellyjaffe is another example, if I read his previous self-description correctly - dealer in sports forgeries who now works detecting them?