Precisely. The physiological indicators that supposedly indicate lying simply do not arise in habitual liars (Clinton could tell you that day is night and not tweak the needle) and can be turned on and off at will with a little understanding of how the magic machine works.
And I don't doubt that one of the prerequisites for admission to the Clinton inner-circle is the ability to effortlessly spout bald-faced lies. There is no way on God's green earth that the Clintonistas would permit someone with a conscience to enter the collective. The next time you have the misfortune of hearing a Lani Davis interview, you'll see what I mean.