If the system does detect an anomaly, it asks itself if there is likely to be an innocent explanation (a change in the weather, for example, or a public holiday).
如果系统探测到异常，将会自我判断是否可以合理解释(例如天气变化或节假日)。
For example, terms such as service layer, DAO layer, web layer or web controller need no explanation.
比如，像服务层，DAO层，Web层或者Web控制器这样的术语，这不需要什么解释。
Models need to describe, but they may not by themselves, for example, offer much in the way of explanation or prediction.
模型需要描述，但模型不能描述自身，例如，模型会提出一些解释或者预测。
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