Computer simulation is a powerful technique used to model complex systems and processes through computational methods. By creating a digital representation of real-world phenomena, researchers and engineers can analyze behaviors, predict outcomes, and optimize performance without the need for physical prototypes. This approach is widely applied in various fields, including engineering, economics, and healthcare. For instance, in healthcare, computer simulations can help in understanding the spread of diseases or the effectiveness of treatments, ultimately leading to better decision-making and resource allocation.