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But this week we get a bit more, starting with Isaac’s delightful disquisition on the study of kinesics that enables him to instantly interpret what has happened.

So says Anthropologist Ray Birdwhistell, a pioneer in the study of kinesics, as body language is called.

The University of Buffalo's Birdwhistell calls his specialty "kinesics," the study of body motions as a form of communication.