When was the last time a colleague said something so ridiculous that it made your jaw drop? Perhaps a desk mate went into something political, claiming that George Bush is behind 9/11 or that Barack Obama is a Muslim from Kenya? Or maybe your boss voiced science denialism, arguing that the Earth is flat, or the Apollo moon landing was faked?

Just as disconcerting as the conspiracy theorist in your midst is hearing a boss or colleague blatantly deny a business reality, such as evidence that a favored product flopped, or a decision was absolutely the wrong one.

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