You make a very good point, and provide an excellent reference. It is in human nature to classify, and that is doubly true for an academic. Simply put, without

You make a very good point, and provide an excellent reference. It is in human nature to classify, and that is doubly true for an academic. Simply put, without a classification system we can’t point at a thing and say it is different to another thing. Neither can we say that one of those things is greater than the other. I use libraries a lot and I have been reasonably satisfied with how the Dewey system seems to support common sense differences between ‘things’. Every now and then this common sense fails, but that is the nature of any hermetic system.