[Travis McGee]

They are not perfect, and can be beaten by some people with special training, and by certain conscienceless psychopaths, but they are a valuable tool.

The NSA and CIA use them day in day out as a term of emplyment to check for undeclared foreign contacts etc.

[rolling_stone]

http://antipolygraph.org/

Give them some time and coaching and I bet they can pass the old poly test...My guess is two of the three are being deceptive and Chadhoury is stuck with going along with the story...

[steve-b]

The NSA and CIA use them day in day out as a term of emplyment to check for undeclared foreign contacts etc.

The fact that our intelligence agencies give any credence to this voo-doo nonsense explains a lot.