Linear and highly predictable systems like automobile engines are not really comparable to chaotic systems like the weather or the universe: they demand separat

Linear and highly predictable systems like automobile engines are not really comparable to chaotic systems like the weather or the universe: they demand separate modes of analysis. Emergent behavior is one of these lenses of analysis that is useful for chaotic systems, so it is natural that trying to make comparisons to an engine don’t really work with it. For a simple physical system that is chaotic, i.e. does display emergent behavior, good examples I’ve heard are things like triple pendulums, or the currents of water in a river.