用算法加工符号序列，使其长度最小化，并允许观察者将其还原，这涉及算法复杂度，或Kolmogorov - Chaitin复杂度(柯氏复杂度或KCC)。

Symbolic sequences can be characterized by the length of the minimal algorithm that allows the observer to reconstitute them, referred to as algorithmic complexity or Kolmogorov-Chaitin complexity.

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无论什么样的解释，鸟类观察者们都是被允许的。

Whatever the explanation, birdwatchers are entranced.

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