Even a yoga class might be helpful in such a pursuit . In any event , the fact that this instrument measures bodily reactions , and not actual lying , shows that it cannot be trusted . After all , if people can circumvent the intent of the polygraph , it is a device that cannot be considered valid . Frye v . United States , a 1923 case , provides and supports for the inaccuracy of the polygraph in that case , the court held that ``The scientific community community did...











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