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
Can't developers just see? We designers love artboards. From rough UI sketches to high fidelity mockups, we see ourselves as visual artists expressing ideas on artboards that have a pre-defined width and height. To start a new project, we declare the size of the artboard in the first step. What about responsive design? Not a problem! We diligently design on three artboards — one for mobile, one for tablet, and one for desktop — with content elegantly adapting, scaling, reflowing, reordering, and reprioritizing. We proudly hand off the artboards to developers while patting ourselves on the back: this is how responsive design should be done. After weeks of arduous engineering, the product finally comes out. We find, to our great dismay, that some copy is hanging off the grid, the focal point of the hero image has been cropped out, the font sizes don’t even come close to the type ramp. What went wrong? Can’t the developers just see everything on all those artboards? Nope. Chuánqí Sun, Beyond Artboards Start drawing, then put the box around it