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Is renting really throwing money away? Does a mortgage actually build wealth? Every video here answers one money question with arithmetic instead of opinions. One decision per video — renting versus buying, paying off debt versus investing, what compound interest really does over thirty years — modelled month by month, with every assumption written down where you can check it. No hustles, no side-gig schemes, no get-rich-quick. Just the numbers and what they actually say. The assumptions behind every figure are listed in the video description. Change them and you get your own answer, which is rather the point. Nothing here is financial advice, and nothing here is infallible — a model is only as good as its assumptions, and mine can be wrong. Check the arithmetic and decide for yourself. Personal finance, investing, mortgages, opportunity cost and financial literacy, explained calmly — for people who would rather see the model than be sold something. New explainer every week.