![]() The Gesta Romanorum, a medieval anthology of moral fables, tells the story of a soldier who had his clerk measure his wife’s pulse to figure out if she was being unfaithful.Īs the United States entered World War I, William Marston, a researcher at Harvard, pioneered the use of machines that measured blood pressure to attempt to ascertain deception. ![]() Inquisitors in ancient China asked suspected liars to put rice in their mouths to see if they were salivating. But what if lying is just too complex for any machine to reliably identify, no matter how advanced its algorithm is? Corporations and governments are beginning to rely on them to make decisions about the trustworthiness of customers, employees, citizens, immigrants, and international visitors. Nonetheless, the veneer of modernity that AI gives them is bringing these systems into settings the polygraph has not been able to penetrate: border crossings, private job interviews, loan screenings, and insurance fraud claims. There is scant evidence that the results they produce can be trusted. In reality, the psychological work that undergirds these new AI systems is even flimsier than the research underlying the polygraph.
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