What doe s a "lie detector" detect? Wired took a look at them and the answer is...maybe not a lot.
I'd like to see a run-off between a polygraph and a good police detective. People are pretty good lie detectors. On the other hand, some people are extraordinarily good liars -- and the same coolness and "method acting" that lets such a person lie successfully to others would show nice, truthful responses on the machine.
It's disappointing. Who wouldn't like a reliable way to know when someone is lying? And think of what it would do the political debates....
2 months ago