Chaos

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It has been suggested that Chaos (mythology) be merged into this article or section. (Discuss)

For other uses, see Chaos (disambiguation).

Cellular automaton here running Stephen Wolfram's "rule 30", a mathematical construct displaying chaotic behavior

Chaos (derived from the Ancient Greek Χάος, Chaos) typically refers to unpredictability, and is the antithetical concept of cosmos. The word χάος did not mean "disorder" in classical-period ancient Greece. It meant "the primal emptiness, space" (see Chaos (mythology)). Chaos is derived from the Proto-Indo-Euopean root ghn or ghen meaning "gape, be wide open": compare "chasm" (from Ancient Greek χάσμα, a cleft, slit or gap), and Anglo-Saxon gānian ("yawn"), geanian, ginian ("gape wide"); see also Old Norse Ginnungagap. Due to people misunderstanding early Christian uses of the word, the meaning of the word changed to "disorder". (The Ancient Greek for "disorder" is ταραχή.).

[edit] Cause and consequence

Chaos is the complexity of causality or the relationship between events. This means that any 'seemingly' insignificant event in the universe has the potential to trigger a chain reaction that will change the whole system. A well known saying in connection with this issue is "A butterfly flapping its wings in one part of the world can cause a hurricane on the other side of the earth." This is also known as the "butterfly effect".^[1]

[edit] Scientific and mathematical chaos

Main article: Chaos theory

Main article: Chaos (physics)

Mathematically, chaos means an aperiodic deterministic behavior which is very sensitive to its initial conditions, i.e., infinitesimal perturbations of initial conditions for a chaotic dynamical system lead to large variations of the orbit in the phase space.

Chaotic systems are systems that look random but aren't. They are actually deterministic systems (predictable if you have enough information) governed by physical laws, that are very difficult to predict accurately (a commonly used example is weather forecasting).

Furthermore, the word gas is probably an alteration of chaos. Particles in gases exhibit chaotic motion, although this was unknown to Jan Baptist van Helmont, the inventor of the term. He is instead believed to have been influenced by the concept of chaos in the occult theories of Paracelsus.