ABSTRACT
This chapter discusses the issues that arose from the creation of these taxonomies. It explains that the techniques developed for their creation could be used in the creation of any taxonomy for any form of database. The development of effective taxonomies to organise large databases has its roots in knowledge management and library science. Techniques for developing project-specific taxonomies and, moreover, testing the effectiveness of these taxonomies are largely lacking. One more point should be made about hierarchies in taxonomies, which is that the arrangement of these hierarchies should be tightly nested. The concept of tightly nested taxonomies is taken, as the above example indicates, from biology cladistics but we have found that such taxonomies greatly facilitate the production of acceptable reliability data. Therefore, even in the field of safety, there is no logical reason as to why there should be only one taxonomic they should be used to apply to all cases of human error. It should be noted that Taxonomic Theory has implications far beyond safety.
