Many systems are organized hierarchically. The CERNDOC documentation system is an example, as is the Unix file system, and the VMS/HELP system. A tree has the practical advantage of giving every node a unique name. However, it does not allow the system to model the real world. For example, in a hierarchical HELP system such as VMS/HELP, one often gets to a lead on a tree such as:
HELP COMPILER SOURCE_FORMAT PRAGMAS DEFAULTS
only to find a reference to another leaf: Please see
HELP COMPILER COMMAND OPTIONS DEFAULTS PRAGMAS
and it is necessary to leave the system and re-enter it. What was needed was a link from one node to another, because in this case the information was not naturally organized into a tree.
This, I think, is the brilliance of Notion, and what makes it one of the best examples of “fidelity to digital information” that I’ve come across. The structure of the app reflects the structure of the web itself: digital content is purposefully formatted, like semantic HTML elements, and exists in a hierarchical structure (directories on the web, nested pages in Notion), yet can be linked and referenced to create a complex network of information. And pages in Notion reveal the structure of the information: when nesting a page within a page, the child page always displays on the parent page. There’s no way to create a child page that doesn’t display on a parent page, no way to obscure the structure of the information. The semantic structure of Notion reflects the semantic structure of the web itself.
Truchet's approach was more topological than geometric, and the qualitative aspects of pattern take priority over the metric ones. His principles provide a kind of metaphor for the hierarchy of separation and connection in all things.
In the terrific documentary about his work, The Secret Life of Lance Letscher, the collage artist points out that he doesn’t want his file boxes of source material organized too much, that he specifically avoids organizing them, so that he can find unexpected things when he starts searching. “He depends upon that chaos of stuff, of things lying around.”
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There are several paragraphs in Murch’s book about the importance of fighting against the touted “features” of digital tools, such as speed. “The real issue with speed,” he says, “Is not just how fast can you go, but where are you going so fast? It doesn’t help to arrive quickly if you wind up in the wrong place.”
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If I was simply able to execute a full-text search on my notebooks, and pull up exactly what I was looking for, that’s all I’d find: exactly what I was looking for. And the real art is in finding what I didn’t know I was looking for.