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
Note-Taking for Pencilophobes An Essay from Field Notes on Science and Nature by Piotr Naskrecki MantisAn extension of my brainRecordingsThe era of paper
Mantis One of the first relational databases for biologists was Biota. Unfortunately, in its early stages of implementation, Biota did not yet have all the elements that my work on taxonomy, systematics, and behavior of katydids required. I decided to develop my own solution, and Mantis was born. There is a fairly long list of data points, but having a database designed specifically to record them simplifies the record-keeping process tremendously.
An extension of my brain Mantis has become an extension of my brain, and extra memory storage space that never forgets anything and thus, I am convinced, is a reason for major memory lapses on my part. Why should I make an effort to remember the author of that paper on the courtship behavior of Cyphoderris when I can quickly look it up?
Recordings Of course, I do not carry my laptop with me when out in the first at night, and if anything requires me to make a note I either record it as a voice message on the sound recorder (which I always carry with me), or make a note in a small, waterproof notebook.
The era of paper Instant availability and portability of data make research in the field infinitely easier for scientists, but what is lost is the feeling of slow accumulation of knowledge and the physical evidence of one’s scientific prestige—the extensive shelves of important-looking volumes and journals. There is no denying it, the era of paper is fading fast, and I can easily imagine a time when students will be perplexed by the strange, primitive implement known as the pencil. As far as I am concerned, this time cannot come soon enough.