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
A little act of hope A Fragment by Jeremy Keith adactio.com As I scroll down my “on this day” page, I come across more and more dead links that have been snapped off from the fabric of the web. If I stop and think about it, it can get quite dispiriting. Why bother making hyperlinks at all? It’s only a matter of time until those links break. In a sense, every hyperlink on the World Wide Web is little act of hope. Even though I know that when I link to something, it probably won’t last, I still harbour that hope. If hyperlinks are built on hope, and the web is made of hyperlinks, then in a way, the World Wide Web is quite literally made out of hope. I like that. And thus the heart will break hypermediahope