This document discusses patient safety and medical errors. It notes that around 1 in 10 hospitalized patients experience harm from medical errors, with at least 50% being preventable. Common causes of errors include inadequate assessment, communication issues, training deficiencies, and environmental factors like understaffing. The document advocates for strategies like checklists, reporting systems, and process redesign to promote patient safety and minimize harm from errors. It also discusses the psychological impact on healthcare workers who make errors and the importance of a supportive learning environment.