Even among Earth animals, humans are the odd ones out where our smiling is meant as friendly instead of threatening. This undoubtedly feeds into the “space-orc” view by aliens we contact bc, wtf, even their own nonsentient species bare their teeth as threats. THESE PEOPLE ARE MAKING THREAT DISPLAYS CONSTANTLY AS PART OF THEIR SOCIAL NORMS AAAHHH
Soon, classes and resources pop up purporting to teach other species how to sort human communication. But they, uh, have a hard time figuring out which ones to take seriously, because hey, this looks legit, right?
everyone needs to watch this all the way to the end omg
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