[StolarStorm]

Using the micro expression method to determine a threat would cause me to get the "probe" search every time.

I get panic attacks. I radiate that on my face.... and it causes others to view me suspiciously. I get followed in stores by security and harassed at the airport. Really pisses me off.

On the reverse side, there are people who are complete sociopaths that do not exhibit any emotions on their faces. I would bet you'd find more terrorists that fit that type... Some folks do not fit into the standard mold that these behavior tests are designed for.

[FourPeas]

There are some physical cues that can’t be faked and generally aren’t effected by medical anxiety (which I also experience). Talking to people becomes quite fascinating when you can spot them.