hierarchy
Excursus: Homage to the Square^3
The problem with trees
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.
The brilliance of notion
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.
Separation and connection in all things
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.
Googie architecture
Where uses are in actual fact homogeneous, we often find that deliberate distinctions and differences are contrived among the buildings. But these contrived differences give rise to esthetic difficulties too. Because inherent differences—those that come from genuinely differing uses—are lacking among the buildings and their settings, the contrivances represent the desire merely to appear different.
Some of the more blatant manifestations of this phenomenon were well described, back in 1952, by Douglas Haskell, editor of Architectural Forum, under the term “googie architecture.” Googie architecture could then be seen in its finest flowering among the essentially homogeneous and standardized enterprises of roadside commercial strips: hot-dog stands in the shape of hot dogs, ice-cream stands in the shape of ice-cream cones. These are obvious examples of virtual sameness trying, by dint of exhibitionism, to appear unique and different from their similar commercial neighbors. Mr. Haskell pointed out that the same impulses to look special (in spite of not being special) were at work also in more sophisticated construction: weird roofs, weird stairs, weird colors, weird signs, weird anything.