[SteveNuts]

Go watch the JCS episode with the Chris Watts interrogation including his polygraph, you’ll see it’s actually extremely effective.

As a scientific tool to literally detect lies it’s completely bunk, but all the interrogator has to say is “the machine said you weren’t 100% truthful” and humans will 9 times out of 10 start blabbing.

It absolutely works as an interrogation tool.

https://youtu.be/nVZhV7M3mNE