This document discusses information visualization and complex systems. It contains the following information: 1. Information visualization is the process of conveying knowledge through the visual perception of information. It combines information and visual design. 2. Complex systems consist of many interacting elements without clear boundaries and have a history. Tracing the structure and relationships in a complex system can help understand it. 3. Information visualization is important for understanding phenomena across many domains like science, humanities, and management. It allows for more informed decision making and risk evaluation.