Your universe might split 10^50 times every second—every outcome happens, and your nearest identical you is 10^(10^29) meters away. The episode breaks down four multiverse flavors: infinite space repeats, cosmic inflation’s bubble universes, quantum many‑worlds via Schrödinger’s cat, and a mathematical universe—plus the fight over evidence, from cosmic microwave background bruises to quantum computing clues. It tackles cosmic fine‑tuning, the limits of testability, and why your choices still define the branch you actually experience.