Complex Systems
Complex Systems is an interdisciplinary field studying how relationships between parts give rise to collective behaviors that the parts alone do not exhibit. A complex system is characterized by emergence — system-level properties that arise from interactions among components but cannot be predicted or explained by examining the components in isolation.
Examples include ant colonies, the human brain, social networks, and climate systems. In each case, the behavior of the whole transcends the behavior of the parts.
Complex systems are typically studied through computational modeling, network analysis, and agent-based simulation rather than traditional reductionist methods. The field draws on physics, biology, computer science, and sociology.
Key concepts include emergence, self-organization, feedback loops, phase transitions, and adaptation.