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Penn & Teller: Bullshit! - Season 7 Episode 5 - Lie Detectors

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Published on Jan 5, 2013

Attacks the reliability of the polygraph for detecting lies, stating it merely determines the subject's nervousness.
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Original Airdate: July 23, 2009
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SORRY FOR NOT UPLOADING SEASON 7 EPISODE 4, I COULDN'T FIND IT ANYWHERE
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I do not own this show, Penn & Teller Bullshit
No copyright infringement intended
All rights reserved to Showtime & Penn & Teller or any one else who works on the show.
I am not afflited with either Showtime or Penn & Teller
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