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
Report on the Art and Technology Program of the Los Angeles County Museum of Art, 1967–1971 A Research Paper by Robert Irwin, James Turrell & Ed Wortz archive.org You leave with the artThe object of art
You leave with the art If we define art as part of the realm of experience, we can assume that after a viewer looks at a piece, they "leave" with the art, because the "art" has been experienced. We are dealing with the limits of an experience—not, for instance, with the limits of painting. experience