Is it possible to lie on a polygraph test without getting caught?

I know this sounds like a stupid question. It probably is. I guess what I am really asking is how to keep your body from activating certain nerves when lying. That's the goal of the polygraph test - to detect abnormal nerve movements that indicate you are being dishonest. Certain people tend to avoid eye... show more I know this sounds like a stupid question. It probably is. I guess what I am really asking is how to keep your body from activating certain nerves when lying. That's the goal of the polygraph test - to detect abnormal nerve movements that indicate you are being dishonest. Certain people tend to avoid eye contact, rub their hand, etc. when lying. How can you truly beat the test when you do lie? Anyone ever taken a test, said a lie and have the polygraph not detect anything?
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