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
The Beauty of the Overlooked An Article by Maria Popova www.brainpickings.org Medusa from A Naturalist’s Rambles on the Devonshire Coast by Philip Henry Gosse, 1853. Philip Henry Gosse’s Stunning 19th-Century Illustrations of Coastal Creatures and Reflections on the Delicate Kinship of Life “These objects are, it is true, among the humblest of creatures that are endowed with organic life… Here we catch the first kindling of that spark, which glows into so noble a flame in the Aristotles, the Newtons, and the Miltons of our heaven-gazing race.” The World of the SeaWhy Sketch? naturewater