Logic

Phyllis Allen Richmond (1921-1997) was one of the greatest 20th-century classificationists, and I return to her writings whenever I despair of the obscurity and narrow focus general among many modern writers in the field. I share her skepticism of the library classification schemes that attempt to make the world fit an inflexible model, however granular or faceted that model might be.

Her essay, ‘Some aspects of basic research in classification’ published in Library Resources and Technical Services in the Spring of 1960, takes some well-aimed potshots at the cult of Ranganathian subject analysis, then prevalent. Here’s a brief extract:

‘The Dewey, Universal Decimal and Bliss classifications are made primarily by logical division, which is mirrored to some extent in their notations. The Library of Congress classification, in contrast, is definitely non-logical and the notation is largely ordinal. This classification functions as well, if not better, than the others. A non-logical classification has the great advantage of flexibility, since one may add to it rather freely without upsetting the whole pattern. The fact that the Library of Congress classification is displayed in an almost random fashion, after some initial form divisions in each main class, does not seem to be a disadvantage in its operation. In a non-conventional classification, the elements of each category may be expressed either in a logical or a non-logical manner. The advantage of variability, rather than the display of relationships, is the chief motivation for choosing a non-logical arrangement.’

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