Another common mistake neglects to test interaction with other code, where the interaction with other code causes emergent behavior that is not present when the code is tested in isolation.
另外一种常见错误是忽略了对与其他代码进行交互的测试，这种与其他代码交互所导致的问题，在对代码进行单独测试时是无法呈现出来的。
Emergent behavior exists in many natural, social and other complex systems.
突现行为大量存在于自然、社会等各种复杂系统中。
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