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
Let the goals suggest themselves There are several ways to start the design process, depending on your nature and needs. You can start out by defining your goals, as precisely as possible, and then look at the site with these goals in mind. Or you can take the site with all its characteristics (both good and bad), and let goals suggest themselves. Of the two questions—"What can I make this land do?"—or—"What does this land have to give me?"—the first may lead to exploitation of the land without regard to long-term consequences, while the second to a sustained ecology guided by our intelligent control. Bill Mollison, Introduction to Permaculture Do not propose solutions goalsdesignsustainability