While inadequate use of secondary notation can significantly increase the amount of effort necessary to understand a model, misuse of secondary notation can also be a detriment. Use of symmetry can make a graphic more visually appealing, but can also convey misconceptions if used incorrectly. For instance, placing unrelated items close together may cause a reader to perceive them as being related. Additionally, arbitrary use of coloring may distract a reader as they wonder about the meanings of the various colors.