text: In conclusion there are many reasons why "limiting car usage is important . Its not only important for you but also for the environment and those around you. And who knows walking probably is better .    The use of the Facial Action Conding System would be valuable to read the emotional expressions of students in the classroom because it will detect how the student feels about the task at hand. If it detects that the student is bored it could modify the lesson to make them more awake and begin working on the task at hand. This technology could also help find each students way of learning. For example if one student works hands on and another works by taking notes then the system can mofify both programs to fit their learning style. This technology also could help teachers see if a student understands a topic, and if they see they don't or they are becoming frustrated with it they can modify the lesson. Using this system would be of value to students and schools, because it not only would help students learn but it would also help teacher teach.