1) The document discusses patient safety and error prevention in nursing practice. It outlines common medical errors and approaches to analyzing errors, including root cause analysis. 2) Key strategies to improve safety discussed are checklists, standardized procedures, limiting work hours and fatigue, and involving patients in their own care. National organizations provide safety goals and endorse safe practices. 3) Critical thinking is important for nurses to provide safe care through clinical judgment, reasoning, and reflection on practice. Approaches to developing critical thinking discussed are the nursing process, concept mapping, journaling, and group discussions.