Student 2: I have to disagree with you. It is obvious that the photographer was making a conscious effort. The lack of the person's head speaks to their character, as they are afraid to reveal the truth. This person is keeping a secret, and may also be acting as a reflection of the photographer, whom is trying to show how they themselves are lost and cannot stand up confident. The underexposure compliments this virtue, and also adds to the idea that we are all underexposed, and that in order to fully show ourselves, we have to be subjected to public opinion and in some cases, distaste.
Student 3 (quietly to Student 2) : Wow you really saved my ass with that fine art assist!