This document discusses innovation in libraries in an age of limits. It outlines 23 transformational technologies that will affect libraries over the next decade, including linked data, mobile technologies, analytics, and streaming media. It argues that libraries should focus on complementing commercial search engines like Google based on their strengths, and should aim to provide an immersive discovery experience for users rather than competing directly with other platforms. The document also discusses principles like collaboration, accessibility, and focusing on the user experience above specific technologies.