Visualization is valuable.
Let's have more visualization. Nowadays computer graphicists are trying to place this picture more directly in the mind by creating the pictures with a computer. Even though the visualization is on a piece of paper or a computer screen, the ultimate destination is the mind. Neurophysiologists have found that the two hemispheres of the brain seem to process knowledge in different ways. The left side does the logical symbolic things and the right side the intuitive visual things.