The military may have ways -- gruesome ways -- of making people talk, as the Abu Ghraib prison scandal has shown. But it still doesn't have a reliable method for figuring out whether those people are telling the truth or not.
Nearly 75 years since the introduction of the polygraph, there's still nothing close to a foolproof lie detector. Traditional methods for catching a fibber have been battered by scientific study. And, despite endless waves of hype, the high-tech alternatives -- brain scans, thermal images and voice analysis -- have withered under scrutiny, or remain largely unproven.
My Wired News article has details.
LIE DETECTORS CAN'T HANDLE THE TRUTH
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