Protagonist vs. subject
From Bahai9
Typically in most reference works, information is sorted by more familiar Subject (i.e., topical) categorization systems.
However, another useful means of storing information (particularly in regards to keeping information (or goals) regarding various people or types of people, is through a protagonist categorization. This categorization can also often be simpler and more intuitive in certain areas.
Virtually all subjects can be reframed as protagonist(s).
For example, the Subject categorization of the field of "Medicine", might be considered as a study of medicines, healing, and also as dealing with hospitals, doctors, the body, etc.
At this site, to maximize access to a given page, the latter items could ideally be accessible from the topical Medicine page, but also through other Protagonist categorizations (e.g., doctors under "People by occupation", etc.)
