Raymond,

I think I understand the point you're trying to make, and I recognize that the Silent Answer Test, which is discussed in The Lie Behind the Lie Detector, is administered without the examinee speaking a word during the in-test phase. But even in this latter case, the examinee has verbally answered the questions aloud during the pre-test phase, and the overarching objective of the "test" is still to determine whether the examinee has or has not spoken the truth. To argue otherwise is to split hairs, or in more colorful language, to pick fly shit out of pepper.