3 ideas
Every visual element is either abstract (a pure geometric form like a point, line, or plane with no reference outside itself) or concrete (a representation of something recognizable in the real world). Classifying an object along this axis determines how a viewer reads it — as structure and relationship, or as depicted content.
A point marks a position in space and has no measurable dimension; it becomes a line only when it moves or repeats in sequence. This makes the point the irreducible origin of all visual form — every line, plane, and volume is built from the relationship between points.
Visual significance is not located in an isolated object but in its relations to others — through contrast, similarity, proximity, repetition, rhythm, and direction. Reading a composition means decoding these relationships rather than cataloging the individual parts.