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In the world of Six Sigma and Lean problem-solving, teams are often overwhelmed with a flood of ideas, observations, or data points. Organizing these into meaningful patterns is critical to avoid analysis paralysis. One of the most powerful tools for this is the Affinity Diagram, also known as an affinity chart, affinity mapping, K-J Method, or thematic analysis. Initially developed in the 1960s by Japanese anthropologist Jiro Kawakita, the affinity diagram enables teams to g