text: "Facial Action Coding System" is not useful to students in a classroom because it is expensive and mostly unaffordable for all classes. D'Alto explains what this technology is made up of, and its component looks expensive. On paragraph 3 the author explains that, "The process begins when the computer constructs a 3-D computer model of the face; all 44 major muscles in the model must move like human muscles." (D'Alto 3) Having a 3-D model computer in classes not less than a hundred is money consuming and might ruin the school's budget. Having such prestige technology in class does not mean the students in the classroom will learn better or try changing their facial expressions.