The photograph, now they are detached from their original surroundings, they are involved in a close world in which they only relate to each other: all the rest of 'reality' has vanished. This allows us to see those elements from a new point of view and perhaps to reach a better understanding.
15 Step is about how if you have mental illness and try to dance you look very funny. Whenever you see me dancing on stage, I'm imitating the mentally ill.