text: In Dr. Huang's prediction, he claims that the use of this technology can recognize the emotional status of the students. When they are detected to be confused, the computer can make changes to the lessons in order to make it easier or better explained. This can accelerate the progress of the study as teachers will not be worrying about which part that students do not understand. More specific explaination can be made immediately when students seem to be confused, and skip easier parts when students become bored. Classes will be become more efficient for both teachers and students: teachers will not be guessing what students do not understand and waste time on easy parts while students will always be learning what they actually need to understand.