Order too complex to predict, not the absence of order. Chaos is sensitive rather than random.
Greek khaos (a vast gap, a chasm, the formless void before creation), possibly related to khaskein (to gape, to yawn open); Hesiod uses it for the primordial emptiness that came before any ordered thing.
Order too complex to predict, not the plain absence of order — this house reads chaos as sensitive to its starting conditions, not random.