a scientific theory about situations that obey particular laws but appear to have little or no order

A frequent metaphor for one aspect of chaos theory is called the Butterfly Effect - butterflies flapping their wings in the Amazon affect the weather in Chicago. 关于混沌理论的一个方面，有个频繁引用的比喻叫做蝴蝶效应——蝴蝶在亚马孙扇动翅膀会影响芝加哥的天气。