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. Tim Berners-Lee, Seeing With Fresh Eyes A City Is Not a Tree hierarchywww
Cool URIs don't change An Essay by Tim Berners-Lee www.w3.org What makes a cool URI? A cool URI is one which does not change. What sorts of URI change? URIs don't change: people change them. The User Interface of URLs www
On the Winds An Article by Justin E. H. Smith justinehsmith.substack.com On the Situations and Names of the Winds is the title of a fragment of a pseudo-Aristotelian treatise, most likely written by a later author of the Peripatetic school. The two-page work identifies and briefly describes the names not just of the four anemoi, but gives a wind-name to each of the twelve points of the so-called “wind-rose”, slightly less poetically the “compass rose”, which is the figure seen on classical nautical charts and maps that shows the cardinal points as well as points intermediate. ...In both agricultural and maritime settings, the names of the winds were at once practical and phenomenologically basic: to step outside and to feel them was to know how things were in the most basic sense, to “know which way the wind is blowing”, as we still vestigially say, and to find the language to speak of it. ...If I were ever permitted to teach a course on the philosophy of wind, I would begin with the questions: How did the winds lose their names? And what does it mean for us to live in a world of nameless winds? I step outside and I feel a gust. “That’s wind,” I think to myself, and I have nothing more to add beyond that. I don’t know the winds. nameswindclimatephilosophy