从逻辑上讲，我们应该在做事之前先了解清楚，这大概就是专家们在我们的教育体系中强制推行这一做法的原因。
Logically we should learn about things before doing them and that is presumably why the experts enforce this in our educational system.
不论付费或免费，通常都需要一个“信用”体系的帮助，用于评估来自于社区的搜索结果和专家（意见）。
Whether paid or unpaid, there is usually a credit system for helping to deliver search results and experts emerge from the community.
但专家方刚说：“这些选美比赛是对传统社会性别体系的反思。”
"These beauty contests are reflections of the traditional societal gender system," observed the expert, Fang.
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