That's an interesting read. I think the emphasis there isn't whether it's a pseudoscience or even a useful tool, but whether it should have an absolute veto w.

That's an interesting read. I think the emphasis there isn't whether it's a pseudoscience or even a useful tool, but whether it should have an absolute veto w.r.t. employment. I had to take a polygraph for a job myself, and when the technician started he asked me to choose a random card. Then he started going through each card--"was it the Queen of Clubs?" and I would answer "no" to each. At the end he could tell me what card I had selected based on my responses. So it validated that polygraphs work in some sense. However, your reaction to a question like "have you ever hurt someone?", while verbally will be "yes" or "no", is a lot more loaded with emotion than lying about a card. "Have you ever lied?" "Yes." "Really?" (looks at me with contempt) "Yes, I recall that I lied to my mother about my college grades when she called me last week." "Why?" "Because I wasn't in the place or mood to have that conversation." "Ok. Other than the times you have disclosed, have you ever lied?" "No" (in truth almost certainly, but none that I can specifically recall). At the end he said the tests were "inconclusive" but I got the clearance and the job, so I guess I passed.