It's a pseudoscientific joke
Polygraph "testing" has never been shown to determine truth from deception in a peer-reviewed study with better than chance accuracy under field conditions.
Claims of 95-99% accuracy spouted by polygraph examiners are greatly exaggerated. These numbers have been produced by those with an interest in polygraphy and published in polygraph examiner/police trade journals. Once again, polygraphy has proved to be no more accurate than a coin flip when evaluated by scientists under field conditions. This leaves many truthful and innocent people are falsely accused by this unreliable procedure.
Furthermore, beating the polygraph is easy. I strongly suggest that everyone interested in "lie detection" visit
AntiPolygraph.org. This site explains the trickery behind these unreliable "tests" and explains how anyone (truthful or not) can pass.
Best of all, everything at the site is free. Be sure to download and read the free book
The Lie Behind the Lie Detector .
Those of you who said you lied and still passed really should read the book. It is likely that you were fooled by the "probable lie control questions." The polygraph examiner explains to you that he expects all questions to be answered truthfully. In actuality, he assumes that some of your answers will be lies.
Eviscerator: Put a thumbtack in your shoe and make sure to step on it when you are answering a question. Put Ben Gay in your armpits. Both of these elevate response and causes your lies and truth to look the same.
Unfortunately, you are correct when you say that "[use of these techniques] causes your lies and truth to look the same." Regrettably, this will produce an inconclusive (not a passing) result. In order to pass, you need to engage in countermeasures during the control questions only. Read chapter four of the AntiPolygraph.org book to find out exactly how to reliably beat the polygraph.
Polygraphy--like astrology and phrenology--is a fraud. Unfortunately, bodybuilding contests are one of the few places where it still survives. Its only value is as an interrogation prop (for those ignorant to the trickery). If the charts are actually being relied upon, I can guarantee you that a large percentage of applicants are being falsely accused.
Lastly, the money issue. You should know that becoming a licensed polygraph examiner requires no education and only 8 weeks of training! Even barber college is 26 weeks. Somehow, they charge $250-$400/hr and people pay it (despite the fact that the results of these "tests" are meaningless). It’s a scam… Educate yourself and don’t be fooled…