Nate Sowder's piece on Florence Nightingale highlights the dangers of relying on vanity metrics—numbers that impress but don’t inform decision-making. Nightingale’s experience during the Crimean War exemplifies this issue. She encountered a military hospital plagued by poor conditions and overwhelming data that lacked actionable insights. The records existed but failed to categorize deaths or analyze conditions, which obscured the real problems facing the institution. Nightingale recognized that the health of the hospital depended on clear, structured information that could guide decisions. Instead of accepting reports as evidence of activity, she questioned what information would compel action. By isolating preventable deaths and identifying trends, she transformed the data into a compelling narrative. Her innovative use of visual data representations, like the Coxcomb chart, made the issues undeniable and prompted necessary changes. Through her analysis, Nightingale shifted the focus from mere activity to targeted actions that could improve outcomes. She emphasized the need for clarity in goals and the importance of identifying key signals that indicate progress. This approach not only highlighted the failures of the existing system but also paved the way for more effective decision-making in healthcare. Nightingale's work illustrates the critical distinction between numbers that look good and those that drive meaningful change.