Lie detector test is not reliable 61%

I have just been looking up the polygraph on wikedpedia, And have read that the so called lie detector test is flawed in the fact that it is only 61% accurate,That means that a lot of the people who have gone on the JK show may or may not have been cheating after all! That means that all this time ,Lots of relationships may not have ended if it was not for the JK show! Don't you think that is ludicrous! The JK show has a lot to answer for! Only one thing to say, Put something on the end of it!