Antoine de Saint Exupery once said, “Perfection is finally attained not when there is no longer anything to add but when there is no longer anything to take away, when a body has been stripped down to its nakedness.”
I believe cubism, at the very least synthetic cubism, follows this ideal. Picasso’s cubists paintings avoids metaphors and even largely avoids color metaphors. He paints what he sees, with all necessary emotions built into the painting. Maar’s isolation is not identified by despair or by cool color tones. Instead, her isolations is identified by isolation itself. The plane you find Maar on is isolated from the other planes. She “sitting” on the chair but she is not on the chair, she is not connected to the chair. Isolation identifies isolation, there is little metaphor there.
Picasso does not paint “realistic” scenes in the traditional scenes. He does not try to recreate a scene photo-realistically. It is unnecessary for him. He has removed the details from the painting that do not need to be there. I believe, while maintaining the scene and message, Picasso’s cubist works have broken down the painting to the point of near perfection.