text: Technology is not always accurate. If this software makes an appearance in classrooms and students start using it, it could give false information. The pasage states, "By weighting the different units, the software can even identify mixed emotions (as in da Vincis masterpiece). Each expression is compared against a neutral face (showing no emotion)." Each person's face is compared to the exact same neutral face, which will not be accurate. Each person has a different neutral face, so in order for the information to be correct, it will need to be compared against each person's neutral face.