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liquidm · 4822 days ago · link · · parent · post: New camera system monitors tiny changes in facial expressions to detect lies
"In a real, high-stress situation, we might get an even higher success rate," noted Professor Ugail, who believes he'll eventually be able to detect around 90% of those who are lying, which is similar to the performance of the polygraph.
I thought this was particularly interesting considering how little scientific validity the polygraph test has. This may be an indication that reliably being able to tell if a person is lying may be an impossible feat.