Humans lie. And ever since Adam said "What Apple?" humans without omniscient means to look inside each others' heads have been searching for easier clues. Technology joined the fray measuring physiological changes that indicated stress. But the tech assumes liars experience stress when telling untruths ---and this is not always the case. People may feel stress in those situations but for other reasons as well. Truth serums, in the form of barbituates like sodium pentothal, were believed to rewire the brain making it impossible to lie. But the subjects were usually so sedated it made it impossible for them to speak as well.
The latest technological advances discovered blood flows differently in the brain when someone is lying. Areas associated with cognitive contro View the rest of this article
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