Animals seem capable of an infinite variety of movement, yet also exhibit substantial stereotypy in repeated actions. A beautiful view of worm behaviour now shows that the worm’s state evolves deterministically but is bounced chaotically between unstable periodic orbits.

中文翻译：

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混沌蠕虫

动物似乎能够进行各种动作，但在重复动作中也表现出实质性的定型观念。现在，蠕虫行为的美丽视图表明，蠕虫的状态是确定性地演化的，但是在不稳定的周期性轨道之间会混沌地反弹。