The essence of design is that it creates technical artifacts. Dual natures of artifact are dual realization of design.
设计的本质是创造技术人工物，技术人工物的双重属性问题就是设计的双重实现问题。
The essence of design is that it creates technical artifacts. Dual natures of artifact are dual realization of design.
设计的本质是创造技术人工物，技术人工物的双重属性问题就是设计的双重实现问题。
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