This podcast episode delves into the fascinating topic of cellular regeneration and the human lifespan. It challenges the commonly held belief that our bodies replace themselves every seven days and explores the nuances of cellular turnover and self-identity. The episode also investigates the increasing human lifespan, misconceptions about cell regeneration, and the intriguing use of carbon-14 dating in determining cell turnover rates. Ultimately, it questions the purpose of life beyond carbon recycling and ponders the significance of multiple species and the possibility of a higher meaning in our existence.