The document discusses framing opportunities for powerful metrics in libraries. It suggests libraries focus on understanding stakeholder needs rather than what the library thinks people need. Successful measurement involves understanding context, aligning strategies with objectives, identifying impactful services, defining appropriate measures, managing measurement data, translating data into outcomes and impacts, and communicating results. The document advocates reframing measurement from outputs to impacts by starting with desired impacts in mind. It provides examples of studies measuring library impacts at various universities.