Complexity refers to the state of having many interconnected parts or elements, making a system difficult to understand or predict. It is often seen in various fields, such as biology, economics, and computer science, where numerous variables interact in intricate ways. This interconnectedness can lead to unexpected outcomes, as small changes in one part of a system can significantly affect the whole. In everyday life, complexity can be observed in situations like traffic systems or ecosystems, where multiple factors influence behavior and stability. Understanding complexity helps in problem-solving and decision-making, as it encourages a holistic view rather than focusing on isolated components.