# Complex System https://en.wikipedia.org/wiki/Complex_system A complex system is a system composed of many interacting components, which may include dependencies, competitions, and relationships. These interactions make the system intrinsically difficult to model. Examples include Earth's climate, the human brain, and social organizations. Complex systems exhibit properties such as nonlinearity, emergence, and adaptation. They are studied across various fields, including physics, biology, and economics, to understand how relationships between parts give rise to collective behaviors.