When I was a kid, the polygrapher for the local maximum security prison was a member of the family church. He came in to school one day and did a demo for the k

When I was a kid, the polygrapher for the local maximum security prison was a member of the family church. He came in to school one day and did a demo for the kids. One memorable thing he said was that during an examination, there is only one lie detector in the room, and it isn't the machine.