In the era of rapid change, studies once regarded as independent are lively interacting, while each study is too specialized to understand thoroughly for others who have not been involved in the subject. On one hand, valuable studies never known before are found as interdisciplinary researches become flourish. On the other hand, even the researchers could not often perceive other topics of same subject like researchers of irrelevant study. Consequently, researchers had better have a generous mind to accept wisdom of outsiders. Since the border among studies is now getting vague.
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