text: A second reason that the machine is not worth it is because of the teachers responses. A teacher may now see how a student feels about something and this could lead to more disiplinary issues. The teacher may feel annoyed if the students become amused and there would not be a point to teaching. In paragraph six, it says, "Then it could modify the lesson, like an effective human instructor." and this shows that they are becoming like a teacher and this could lead to a decrease in available jobs, kind of like what is happening with robots. The placement of these machines in classrooms could cause more stress on teachers and more to worry about on top of the student's needs. They aren't only a bad idea because of the teachers and students, but also the upkeep.