I commented: I think your description captures the correct notion of serendipity. As a librarian it is commonly suggested that a scholar who browses the stacks serendipitously makes a new connection or finds the missing pieces of the puzzle. What is ignored, however, is the millennium of formally organizing information and developing structuring systems that enable such “serendipity”. Just like Kuhn’s community of practitioners, librarians enable, or prevent, these connections and paradigm shifts.