设计师通常不能理解对问题的复杂性和对已有知识的深度了解。
Designers often fail to understand the complexity of the issues and the depth of knowledge already known.
下面的章节会深度描述连续物理背后的知识，简单使用的话没有必要理解这一部分。
The following sections present an in-depth description of the concepts behind continuous physics. It is not necessary to understand this part in order to use the engine at a basic level.
随着教育变得更为抽像，充斥着大量的类别，我们担心基础知识的深度和理解度都开始下降。
We are concerned that as education has become more abstract and more packed with topics, the depth and comprehensiveness of understanding of the fundamentals has declined.
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