Quote:
Originally Posted by Passe La Puck
But that's simply because people think they work. Either the suspect gets nervous and confesses or gets pressured into a fake confession because the police think the machine works. The fact that junk science is allowed to exist like this is a sad state of affairs.
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Penn and Teller did a thing on them on their old show. Basically investigators use them to bully a confession out of suspect regardless of actual guilt.