Another important aspect of ontology design concerns the drawing of a line between categories and individuals. For instance, should connectionism be considered an instance of the category philosophy of articial intelligence, or should it be treated as a subcategory with instances of its own? [...] there can be no right answers without considering the intended applications. We have been guided by a rough rule of thumb that we should approximate a one-to-one correspondence between the most specific titles of SEP articles and individuals in the ontology; thus, whether connectionism will be a category or individual will depend on the amount of treatment it receives in the current version of the SEP.