Mirror mirror on the wall, which is the best credibility assessment tool of them all?
What’s the best method for determining whether or not someone is trustworthy? Given the choice, should we trust a thorough background check, a polygraph, or a simple gut-check? These questions take on special significance in an era when the trustworthiness of the media, public figures and more is increasingly fraught. And these are the questions that the Intelligence Advanced Research Projects Activity (IARPA) is trying to answer through a new public challenge.