As an attorney over the years I have examined and cross examined hundreds of people under oath  in court and out of court, in settings of stress and otherwise. My criminal clients were never guilty - first interviews with them were always challenging and sometimes fun. Most experienced attorneys will agree that sometimes it seems that all clients lie, even if only about insginificant things.

I first learned about lying, outside of interaction with my siblings, when I was a teenager attending our local version of summer Boy's State. The boy who ended up elected Sheriff of the camp fooled the real life Deputy Sheriff giving us a "scared straight" demonstration of a lie detector machine. That boy lied on the Deputy's first five questions and passed the machine. Made the Deputy look like a fool.

Some people are great liars and can fool any machine. Most of us would probably fail if we tried to lie about something that concerned  us.

Some people are obvious liars. I've seen the look, the glance aways, and the rapidly batting eyelids many, many times, under many conditions. I watched Tom Ridge on Rachel last night and the replays tonight. I am pretty sure that I saw the look.