This is an episode focused on the history and reliability of lie detection. Rebecca leads a deep dive into humanity's long history of attempting to detect deception — from ancient methods like China's dry rice test, India's sacred donkey test, and medieval Europe's trials by fire and water, to the invention of the modern polygraph by John Larson in 1921. The episode covers how the polygraph works, why its results are highly unreliable and largely inadmissible in court, and the real-world consequences of its failures, including wrongful convictions (Frank Sterling, Jeffrey Deskovic) and dangerous false negatives (Gary Ridgway, Aldrich Ames, Charles Cullen). Heather, an attorney, weighs in on the legal landscape around polygraph admissibility, explaining why it's considered more prejudicial than probative, while all three hosts agree that no one should ever voluntarily submit to one. The episode wraps up with a humorous tangent about polygraph countermeasures — specifically, the KGB-trained technique of clenching one's sphincter — before signing off.
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