#paper

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The Blank Page Revolution - by Steven Johnson

https://adjacentpossible.substack.com/p/the-blank-page-revolution
The most surprising insight, I think, revolves around the significance of the fundamental substrate of all modern notebooks until the digital age: paper. Before reading Allen's book, I had mostly thought about paper in terms of Gutenberg and the printing press democratizing knowledge and information by making it much easier to publish and read printed information in the form of books. But somehow I hadn't fully thought through the more intimate revolution that it enabled—a revolution of self-knowledge and private record-keeping, executed not with a printing press but with a pen.

The Miura-ori and how to fold it

http://wheatpond.com/2012/02/22/miuraori.html
The Miura-ori is a method for folding up a sheet such that it can be opened or closed in one smooth motion. A Miura sheet has only one degree of freedom, and can be thought of as having only two states: fully open, or fully closed. Since reversing one fold in the sheet (that is, making a “mountain” into a “valley”) requires reversing all of the adjacent folds as well, the Miura sheet feels as though it has a memory, and is very resistant to deformation.