text: The auothor describes how a new technology called the Facial Action Coding System enables computers to identify human emotions. A clam for or against the value of using this technology to read students' emotional expressions, I think it's a good idea to know the mood or emotions of people.Twenty five years ago NASA's Viking 1 spacecraft was circling the planet and taking pictures. It cam across a picture that looked like a human face. Scientis then studied it for a while and said it was not a sign of life on Mars that it was just the way a landform in Mars was shapped. They then send it out to the people. The people start freaking out because they have the idea on thier minds that Mars might actually have life for us to live in.