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1·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。

2·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。