1. There is a bias towards Protestant/American aspects prevalent in
both the history and religion disciplines. These problems are being
addressed in each new revision and edition.
2. There is the potential for very large classification call numbers
as a result of number building, and the need for extreme accuracy by
some libraries.
3. The DDC does not work as well as other classification systems for
large academic institutions; although attempts have been made at some.
4. The DDC is not as easily expandable as classification systems
like the Library of Congress Classification system when new subjects or
technologies emerge.
5. Sections of library catalogues can require significant revisions
when new editions come out, and catalogue divisions in many libraries
may need to undertake a great deal of additional work to move from one
edition of the DDC to the next.
6. The DDC is constantly undergoing revisions. (Note, this can also
be considered a merit.)
7. Within the DDC there are some disciplines that are closely
related, yet quite separate numerically like literature 800-899 and
languages 400-499.
8. Within the DDC there are also some classes like ‘Technology,’
in the 600s which the call numbers are very crowded, and others that are
very sparse.
