First the eye sees the totality of a room, then, it continues to dissect individual elements. When viewing a space, the mind instinctively tries to find patterns and consistencies. Gestalt Theory in psychology explains this in more detail. Basically it is a theory that explains how the brain perceives visually. The theory explains how the mind categorizes information and also explains how in design there are certain patterns on how to use this information to our advantage in order to ensure an aesthetic appeal. Some of the categories in this theory states how proximity, repetition, continuation, and variety can be used in a way to achieve visual unity. Proximity refers to like elements being placed within close proximity to one another. Repetition is using a design element over and over within the space. Continuation refers to achieving a sense of movement by placing the item so that the eye can follow it in an imaginary line around a room. Variety means that you play with elements within your design by changing the size, texture, and form that the element takes. Using the square shape in the pillows, wall art, and tables, you are using repetition. When you change the color or size of the squares represented you are utilizing the theory of variety.