Most of the students were really focused on their work. I felt bad for distracting them, even if it was only for three minutes. But the flash mob at the Student Center was actually fun. What we did in the Student Center was more to reinforce a social norm. It is more acceptable to play music there, since there are students who hang out and relax with friends after class. There were no negative reactions in this experiment. I realize that reinforcing social norms is what I like to do best. Breaking social norms makes me uncomfortable, and can sometimes be a negative