The study of complex phenomena in natural systems. Basic themes include the dynamics, interactions, emergence, adaptation, learning, and evolution of a system.
domain of emergent properties and non-linear relationships between factors; unlike chaos, which is inherently uncertain, may often create an illusion of predictability, especially where linear analysis is applied within a short-term, narrow set of assumptions
We can say there are two kinds of complexity. Detail Complexity is when there are many variables. Dynamic Complexity is situations where cause and effect are subtle, and where the effects over time of interventions are not obvious.