Printing knowledge: digital printing cost control, from the paper and ink, more than just paper and ink.

印花常识：数码印花成本控制，源于纸墨，不止于纸墨。

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Before the era of mass printing, knowledge was passed down verbally, and the most important and sacred stories were often sung or rendered as poetry.

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Despite the unsettling notion of a technology that lets anyone download a lethal weapon as easily as an pirated episode of Game of Thrones, regulating 3D printing to prevent gun printing would be both counterproductive and ineffective, argues Michael Weinberg, an attorney with the non-profit Public Knowledge who focuses on the legal issues around 3D printing.

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Johannes Gutenberg transformed his knowledge of wine presses into a printing machine capable of mass-producing words.

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