Movement in art decides how the viewer will perceive an artwork. It is the path our eyes follow or the pattern our eyes go after when we look at an art work. In art, it's extremely important to keep a viewer’s eyes engrossed in the work, and the way an artist does that is by adding movement. Without any movement, artwork is stagnant and people don't really like looking at art that looks or feel boring to them, no matter how valuable it is. If our eyes see movement happening in an art work, they are more likely to enjoy the art as they are now following a pattern or path to explore the contents of the artwork.
Essentially because the aperture (hole) is so small it bends the light a manner that inverts the image. it is not just upside down but it is also reversed image
