text: If the technology of the Facial Action Coding System was that powerful ir smart to read students emotions, it would be good and cool. Teachers would actually know why there student is quiet or why they're not doing anything in class. My evidence is that " by weighting the different units, the software can even identify mixed emotions (as in da Vinci" masterpiece). Each expression is compared against a neutral face (showing no emotions). if you're really close with a friend or family member you'll know if their upset or not.