[There has been] a widening of the field covered by the concept of “information”, both its theory and its practice. Information transfer has been put… - Brian Campbell Vickery

What is now called ‘knowledge organisation’ in this context has a long history. The simplest forms of a knowledge organisation system (KOS) are, after all, the contents list and the index of a textbook. The knowledge is in the text; the KOS is a supplementary tool that helps the reader to find his way around the text. But as such finding aids have become more complex, and taken on wider functions, they have acquired grander names, such as retrieval languages, taxonomies, categorisations, lexicons, thesauri, or ontologies. They are now seen as schemes that organize, manage, and retrieve information.

Information science is concerned with every aspect of the chain of information transfer activities, but the heart of its interest is information search.

I met Ranga on several occasions. He was a fascinating personality, highly organised, a tireless worker, a fierce enthusiast, a charming man. Speaking of his passion for work, he told me once how his young son had stuck a notice on his study door: “Librarianship is unfair to families”... It really was a privilege to have known him.