Everyone knows that the polygraph is far from an air-tight way to catch a liar. But despite this, the Defense Department's Polygraph Institute conducted 11,566 of the tainted tests in fiscal 2002, according to USA Today.
A broad array of efforts are underway to replace the polygraph. But, the McPaper notes, "all the projects are in their early stages, and they are shadowed by a glaring fact: Scientists still haven't proven that there is a scientific way to catch a liar."
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