The document discusses root-cause analysis (RCA) and provides definitions, goals, cognitive biases to avoid, and tools to use when performing RCA. It defines root causes as specific underlying causes that can be reasonably identified and resolved. The goals of RCA are to identify what happened, how it occurred, why, and how to prevent reoccurrence. Tools mentioned for RCA include Five Whys, Current Reality Tree, Interrelationship Diagram, and Cause-and-Effect Diagram. The document emphasizes avoiding cognitive biases and adhering to a seven-step problem-solving process for objective, effective RCA.