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They are in public, and if an expert in body language and facial expressions were sitting next to them paying close attention, he could monitor those emotions j
by tarakat 4y ago
They are in public, and if an expert in body language and facial expressions were sitting next to them paying close attention, he could monitor those emotions just as well. So one cannot say they have a "reasonable expectation of privacy" for their emotional state, and therefore this is not an invasion of privacy even according to US law.
Or perhaps the "reasonable expectation of privacy" is used in an utterly insane manner in US law. One or the other.
- raxxorraxor 4y agoBody language certainly conveys some information, but only to a degree. "Experts" basically just created an expectation toward body language and use that as a reference. For complex emotions this is similar as a horoscope, it fits if you believe in it. This is also why there is "training" for body language. Of course you can "read" the general emotion someone is in.