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No longer using paper is also a factor.

There is more paper printed now than ever before. I think you are probably right about not using it though.

Paper use is in decline in North America and West Europe. In China, it is on the rise.

China invented paper but Germany invented the printing press. Now China exports more printers but Germany exports more paper.

The printing press existed before Gutenberg, even in China. Gutenberg’s invention was movable type.

Movable type also existed before Gutenberg. China was using ceramic and wood based movable type in the 11th century, for instance.