Dewey Decimal Classification (DDC), created 1876. Still used by many public and school libraries, but largely abandoned by academic libraries in the late 20th century.
So what's the problem?
Improvements are made over time, but....
For these reasons, most academic and large public libraries use the Library of Congress Subject Headings and Call numbers, which is much better and progress is slow
It Still isn't perfect: librarians had to fight hard to change "slaves" to "enslaved persons" (2022) and "illegal alien" to "Noncitizens" and "Unauthorized immigration" (2016) and "Tulsa Race Riot" to "tulsa Race Massacre" (2021).
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Anderson, Jane and Kimberly Christensen. "Decolonizing attribution: Traditions of exclusion. Journal of Radical Librarianship, vol. 5, 2019, pp. 113-152.
Change the Subject. Directed by Sawyer Broadley and Jill Baron, Dartmouth College, 2019.
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