text: In the story, the author gives an example of how we don't use technology to tell one's emotions. "You can probably tell how a friend is feeling simply by the look on her face." That example shows that we don't need technology to figure out one's emotions. Even though, its a great invention would be even use it. Its not appropriate to use in a classroom setting. A teacher using that just to see what the kids' emotions are on the lesson. The teacher could just look at them and see how they feel towards this.