This episode features a discussion with Ritchie Vink, founder & CEO of Polars, alongside Jordan Kramsky from AWS, about the development and impact of the Polars data frame library. Ritchie explains how Polars addresses the limitations of traditional data processing tools by offering a multi-threaded, incredibly fast solution optimized for modern hardware. They discuss the business value of Polars, including reducing compute costs and improving developer iteration speed. Ritchie shares the bottom-up adoption story of Polars in the open-source community and his transition from a hobbyist developer to CEO. The conversation touches upon the challenges and importance of saying "no" in open-source development, Polars' move towards commercialization while maintaining open-source values, and Ritchie's advice for aspiring open-source founders.