The document discusses the left and right hemispheres of the brain and their associated functions. The left hemisphere controls logical thinking, language, math, and reasoning, while the right hemisphere handles creative skills like visual/spatial recognition, music, colors, and patterns. It suggests people have preferences for either their left or right brain hemisphere. To determine which side you favor, consider activities you excel at or enjoy, such as writing with your right hand, enjoying planning, or liking words for the left brain, versus drawing, geometry, music or being unorganized for the right brain.