text: Second, it would help show if anyone is faking emotions. In paragraph 8, the author says "...these muscle clues are sometimes used to spot when a "smiling" politician or celebrity isn't being truthful." This would also be helpful with students in a classroom because if student his trying a student is trying to hide being upset a teacher could know and then ask them whats wrong. Also, it would work the other way too. The teacher would know if a student would be faking being upset.