Numbers are frequently referenced. Playback logs and system metrics provide useful insight. In real environments, human response shapes outcomes. A screen can be active, still have limited impact. Understanding this gap supports better planning. when content fits attention patterns. Limits of data-driven evaluation Logs confirm delivery. This information is important. https://andrewdisplaynotes.vblogetin.com/45694581/notes-on-how-digital-signage-works