text: Other reason why we should have technology to read the emoitional expressions of students in a classroom is because it even helps when students come to school upset and in a bad mood it qoutes in the texts about that saying ''By weightiong the different units, the software can even identify mixed emotions(as in da Vinci's masterpiece).'' also it says in the text ''Each expression is compared against a neutral face (showing no emotion).'' Saying it can help you in all type of different ways far as when u are in your moods.