Explore key cultural elements and technical challenges in product experimentation through a 41-minute conference talk from the Data Science Festival. Delve into YouView's journey with hypothesis testing and causal inference, learning how to initiate an experimentation program and address scenarios where randomized control testing is not feasible. Gain insights on UX testing approaches and advanced data science techniques that go beyond traditional chi-square tests. Discover practical lessons on experiment design, external validity, user experience, and the importance of maintaining an experiment backlog. Understand the process of building an experimentation program, from SD to HD redirection to regression analysis, and explore new applications for these methodologies.