I saw a presentation on body language. The presenter used Hillary Clinton so show examples of when body language is practiced (as in lying) rather than genuine. In every speech at some point she’d pretend to see somebody in the audience that she knew, she’d point and seem elated to see them. You could paste each time over the last and they were identical. She is not this happy, spontaneous person she’s portraying (as shown in the example here.) It’s a charade.
Without knowing anything about body language, I picked up on that wave from her after seeing it a couple of times. I remember thinking to myself that she was playing to the camera. Probably most Freepers saw and felt the same. Nice to have it verified.