The document discusses the role of data librarianship and how librarians can measure their impact and value. It begins with an overview of the Martin Prosperity Institute, which examines how capitalism can work best in the 21st century. It then defines data librarianship as involving the entire data lifecycle from creation to preservation and access. The document also summarizes a study conducted by the Toronto Public Library where librarians took on research roles. Finally, it argues that 21st century librarians add value through selection, curation and analysis of information and that both data and stories are needed to communicate their impact and value.