Jeff Jonas: It’s All About the Librarian! New Paradigms in En...

For the moment let’s say that directories, indices and catalogs are all the same thing – a thing used to locate other things.  Some examples include the card catalog at the library, phone directories, Google, eBay and so on.  In each case, these are locator services – they return reference information (e.g., pointers) after being provided one or more search terms. 

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