text: In conclusion , the "Face On Mars" was just a natural formation. This happens in many places on earth too . Which is why you should believe that aliens didnt leave a mark on mars . What the picture actually shows is the Martian equivalent of a butte or mesa.The use of this technology to read the emotionl expressions of students in a classroom is valuable because it helps the teachers know the students feeling. When a student is confuse in a class, the technology can make it easier for that student. The computer knows when you're happy or sad. A classroom computer could recognize when a student is becoming confused or bored. Then it could modify the lesson, like an effective human instructor. The same technology can make computer animated faces more expressive-for video games or video surgery.