artist make shape in the background smaller than shape

in the foreground. Why do they do this?

Artists use the technique of making shapes in the background smaller than those in the foreground to create the illusion of depth and distance in a two-dimensional artwork. This technique is known as "foreshortening," which involves manipulating the size and position of objects to create the illusion of perspective.

By making the shapes in the background smaller than those in the foreground, the artist mimics the way we see the world in real life, where objects that are farther away appear smaller than those that are closer. This creates a sense of space and depth in the artwork, and can help draw the viewer's eye into the composition.

Additionally, the use of foreshortening can also help create a sense of scale and proportion within the artwork. By making objects in the background smaller, the artist can create a feeling of distance or vastness, while objects in the foreground appear larger and more prominent. This subtle manipulation of size and space can help convey the artist's intended message and add depth and meaning to the artwork.