>It should cause a reasonable person to conclude that the tool doesn't work and should not be used.
But it is likely to cause an FBI-drone to conclude that you are attempting to beat the polygraph and therefore untrustworthy.
But it is likely to cause an FBI-drone to conclude that you are attempting to beat the polygraph and therefore untrustworthy.
Maybe the machine isn't meant to do anything, and it's the examiner judging whether you are lying based on how your react to its presence.