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The CIA also uses polygraphs which have been found "inaccurate, may be defeated by countermeasures, and are an imperfect or invalid means of assessing truthfuln
by helsinkiandrew 4y ago
The CIA also uses polygraphs which have been found "inaccurate, may be defeated by countermeasures, and are an imperfect or invalid means of assessing truthfulness"
https://en.wikipedia.org/wiki/Polygraph#Effectiveness https://en.wikipedia.org/wiki/Polygraph#Effectiveness