Brettski, you'll find that logical thinking is not the strong suit of the polygraph community.  Strong armed tactics, intimindation, and brow beating are the order of the day for them.  

They live on lies--and not in the way that lumberjacks live on trees.  Polygraphers spend their lives creating lies and honing them to perfection.  They eat lies, they breath lies, until their very existence becomes a living lie, every moment of it.

They'll try to fool you, to get you to accept their bullshit.  They'll try to make you think that you're defective for not "understanding" their alleged answers.  There's something wrong with you, they'll say, if you don't trust them.  Don't believe it.  Pursue their lies to the source, back them into a corner and throttle them mercilessly until you drag the truth from them.  

If you fail to pursue the truth, you risk having a skewed view of reality--which is exactly what the polygraphers want you to have and is exactly what they themselves have.  They may not be able to deceive us, but they have largely deceived themselves.  They can't fact the truth about who and what they are.  That's why they leave when their lies start falling apart, they fear what will happen to them if their carefully constructed cage of deception is breached.  

Like I said, their very existence is a lie.  There is scarecely a moment in their lives that they do not prove themselves to be either a fool--if they really believe this crap--or a liar and a hypocrit--if they don't.