The document discusses measuring and improving employee happiness in the workplace. It proposes building a simple device that allows employees to anonymously report each day as "good", "nothing to report", or "bad". Collecting this regular feedback could help identify patterns around happiness on different days of the week. The data could then be used to plan interventions like treats on typically unhappy days to boost moods. It also discusses a project called SmartCitti that maps and measures community happiness using spatial and emotional data to identify issues and make improvements.