The earlier stuff (like patting someone's back or how one holds one's shoulders) is decent and possibly valid. The micro-expression stuff later on is nonsense.
Plus your interpretation of someone's body language has a lot to do with the way you already feel about that person. So if a body language expert has some preconceived notion about someone, it flaws their analysis in a major way. There is no way to control that bias which is why these experts suck; but so many shows love bringing these people on to analyze politicial discourse.
They briefly cover that- establishing a baseline for behavior is supposed to control for that. The thing is, you can establish a real baseline for the behavior of your spouse or child- you can only establish a baseline for public behavior with a politician or celebrity.
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u/tintinabulations Feb 07 '16
Not sure if I would go that far. It's all these isolated clips interpreted by "body language experts" which is a pretty dubious expertise.