What does it mean when someone bites his or her lower lip? Why do liars often touch the back of the neck when talking? Match wits with three amazing human lie detectors as they compete against the greatest lie detector machine ever ...See moreWhat does it mean when someone bites his or her lower lip? Why do liars often touch the back of the neck when talking? Match wits with three amazing human lie detectors as they compete against the greatest lie detector machine ever developed. Written by
DCI
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