The document discusses why Waldo is difficult to find and provides tips for making important elements stand out visually. It notes that our field of focus is small but uses half our visual processing, and our eyes and neurons are tuned to detect specific features like patterns, objects, and faces. To emphasize elements, ensure high contrast against other items and use techniques like proximity, shape, color, and motion. Consistency trains viewers to detect priority information. While Waldo puzzles are cognitively challenging, these visual design principles can help elements "pop" out.