Comment by fghrthtb

But you see the polygraph test doesn't have to be accurate. It's not there to actually tell whether the person is guilty. It's there so that the police can save face. Instead of "we made a mistake, we charged the wrong person", they can say "we charged this person, all the evidence suggested they were guilty, but, look at this polygraph test! It proves they are actually innocent". The police must not be questioned, if you believe the police are corrupt as I do then you become very unhappy/restless. Such an attitude does not lend itself to a cohesive society...