I don't believe for a minute they can tell what your thinking. What if somebody hasn't taken a tranquilizer that doesn't like to fly and exhibits nervous symptoms? What if a guy is just cranky because he didn't get any sleep the night before? How about the PO'd guy who doesn't want to go on a stupid vacation with his wife? I'm callin BS on this one, just how much junk science is involved here to keep those grant checks coming in ??