Why is computing important for analyzing complex systems?

Computing is essential to systems engineering because it provides the necessary tools to analyze, model, and manage the inherent complexity of large-scale systems. Its importance is primarily realized through the following capabilities:12

• Analysis and Simulation: Computers allow engineers to perform extensive calculations and direct simulations that would otherwise be impossible. By creating mathematical models, engineers can test how systems respond to various conditions, stress, or component changes before physical construction occurs.123
• Data Processing: Modern systems often involve vast amounts of information. Computers enable the efficient digestion and processing of this data, which is critical for systems concerned with information transmission and management.1
• Control and Feedback: Computers act as central elements in complex systems, such as defense networks, by managing interlaced feedback loops. They process real-time inputs—such as radar signals—to maintain system stability and performance.1
• Predictive Modeling: Through technologies like digital twins, computers provide real-time, virtual replicas of physical systems. This allows for continuous monitoring, performance analysis, and the identification of potential problems throughout a system's entire life cycle.4