Answer: it shows all the images occurring in the town at the same time, as one picture. It’s like painting a matchbox top, base, sides and ends viewed as one.
Picasso and Georges Braque developed this technique and used it to simplify and distill any three-dimensional subject into a multi-faceted, “cubist” shape. Picasso was also greatly influenced by the carved, angular shapes of African masks, an inspiration that can be seen in many of his paintings.