Final answer:
Creating the illusion of depth is not always necessary for a successful work of art. Artists in modern art often emphasize the flatness of the picture plane and focus on the surface of the artwork instead.
Step-by-step explanation:
Creating the illusion of depth is not always necessary for a successful work of art. In modern art, for example, artists may choose to emphasize the flatness of the picture plane and focus on the surface of the artwork rather than creating a sense of depth. This can be seen in the works of artists like Piet Mondrian, who used geometric shapes and flat colors to create a sense of abstraction and simplicity, without relying on the illusion of depth.