The premise is that traditional web search, based on linking authority, is valuable - but some searches benefit greatly from displaying additional results prioritized by recency or social proxemity.

受限于链接权限的传统网络搜索同样是很有价值的，而一些搜索引擎却是从其它更新的结果中获利。

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Its characteristics are subsystem can generate its own information and additional information given in the overall premise, specific "action" can be changed.

其特点是子系统可产生本身的信息并附加所给信息，在总的前提下，具体“行动”是可以改变的。

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