But according to several experts in conspiracy theories, and in the psychology of people who believe in conspiracy theories, there's little chance those people who think Obama is barred from the presidency will ever be convinced otherwise. "There's no amount of evidence or data that will change somebody's mind," says Michael Shermer, who is the publisher of Skeptic magazine and a columnist for Scientific American, and who holds an undergraduate and a master's degree in psychology. "The more data you present a person, the more they doubt it ... Once you're committed, especially behaviorally committed or financially committed, the more impossible it becomes to change your mind."
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Whatever can't be ignored can be twisted to fit into the narrative; every new disclosure of something that should, by rights, end the controversy only opens up new questions, identifies new plotters. Perhaps the most common argument of those questioning Obama's eligibility is that he should just release his full, original birth certificate, rather than the shorter certification, which is a copy. His failure to do so only proves there is reason to be suspicious, they say, and if the document was released, the issue would go away. But that's unlikely. It was, after all, the Obama campaign's release of the certification this summer that stoked the fever of conspiracy mongers.