The machine does the arithmetic. You do the thinking. This is not a statistics class — we are not deriving anything. The AI writes and runs the Python. What it cannot do is care about your neighbourhood, know which question matters, or tell you when a number is being tortured into saying something it shouldn’t. Which method, and what can I honestly claim — that judgment is the skill, and an organiser can learn it in a day. One rule runs through the whole day: the number is only as good as the source under it and the honesty of the claim on top of it. We describe before we conclude. We say “associated with,” not “caused by,” unless we have earned it. We cite data.gov every time.