Librarians have been classifying the world's knowledge since forever, and they developed faceted classification systems (Ranganathan, 1933) to deal with these issues.
https://www.researchgate.net/publication/321840994_Ranganath...
A notable one that hierarchies embed the point of view of the classifier, e.g. the Dewy Decimal's ridiculous classifications of religions (codes 200–299), making minute distinctions like 285 (Presbyterian, Reformed, Congregational), 286 (Baptist, Disciples of Christ, Adventist), then putting all non-Christian religions under a handful of afterthought headings 292–299: 294 for Hinduism, Buddhism, Sikkhism and other religions of Indian origin, 295 for Zoroastrianism and its descendants, 296 for Judaism, 297 for Islam and Bahaism lumped together, and 299 for New Age.
Unfortunately, most of us do not have access to the services of a librarian to develop a taxonomy that corresponds to our own point of view then classify our files accordingly, which is why simple hierarchical taxonomies have endured and faceted ones seldom beyond specialized applications like Digital Asset Management.
https://www.researchgate.net/publication/321840994_Ranganath...
A notable one that hierarchies embed the point of view of the classifier, e.g. the Dewy Decimal's ridiculous classifications of religions (codes 200–299), making minute distinctions like 285 (Presbyterian, Reformed, Congregational), 286 (Baptist, Disciples of Christ, Adventist), then putting all non-Christian religions under a handful of afterthought headings 292–299: 294 for Hinduism, Buddhism, Sikkhism and other religions of Indian origin, 295 for Zoroastrianism and its descendants, 296 for Judaism, 297 for Islam and Bahaism lumped together, and 299 for New Age.
Unfortunately, most of us do not have access to the services of a librarian to develop a taxonomy that corresponds to our own point of view then classify our files accordingly, which is why simple hierarchical taxonomies have endured and faceted ones seldom beyond specialized applications like Digital Asset Management.