Chaos (derived from the Ancient Greek Χάος, Chaos) typically refers to a state lacking order or predictability. In ancient Greece, it referred to the initial state of the universe, and, by extension, space, darkness, or an abyss. In modern English, it's used in classical studies with this original meaning; in mathematics and science to refer to a very specific kind of unpredictability; and informally to mean a state of confusion. Chaos in mythology, literature, and religion… (More on Chaos)