Dialogue/Sound in the the 'non-talking' experimental scenes

Dialogue in the experimental film was a topic of hot debate between group members and the course tutor. The problem was that some people felt that the scenes that were focusing on a form such as lighting. colour and composition (i.e. ones without dialogue) needed some sound, the reason for this I am unsure of, if there was one at all. I felt the scenes did need need sound however, because why should they? sound is not intrinsic to film meaning and is just another element of film production, like costume or gesture. The idea of the film is to rotate the importance of all these elements throughout the film to understand their importance.