What does the equation 'Unit + Variety = Harmony' imply in design?

The equation 'Unit + Variety = Harmony' suggests that a well-designed space or object is achieved through a careful blend of consistency (unit) and diversity (variety). This principle highlights that unity alone may create a monotonous or uninteresting design, while the introduction of variety can enhance visual interest and appeal. When these two elements are skillfully combined, they create a sense of balance and cohesiveness, which is essential for producing an attractive and harmonious outcome in design. By melding these aspects, designers can uplift the overall aesthetic and functional quality of their work, creating environments or items that are both pleasing and effective.