Making art is often about rendering what we see. We are used to icons, shapes that we instantly recognize. When familiar icons aren't present in a piece, the viewer is forced to think/react/respond/imagine a new story for the unfamiliar shapes. We already have a story in our minds for a "butterfly" shape. With a new shape, there is no stereotype, there is no ready story. Instead, there is a disruption of the normal recognition and classification process which forces our minds to exercise. Exercise is good. The shape image is not so familiar, not so easily dismissed. We are compelled to make new stories.