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Between 1972 and 1979, the speaker conducted thousands of polygraph examinations and concluded that the polygraph does not effectively detect deception. They noted that fear has a distinct smell, which they experienced daily in their office. The polygraph is characterized as not a true test but rather an intense interrogation method meant to frighten individuals into confessions. It does not measure truth or deception; rather, it records nervousness. Reactions deemed indicative of lying are only accurate about 50% of the time. The speaker asserts that anyone can pass a lie-detector test by simulating the physiological responses associated with fear, which the polygraph measures through blood pressure, pulse rate, and galvanic skin response (GSR).