This monologue podcast delves into the "measurement myth" in digital advertising—the belief that every marketing action must be precisely attributed to a commercial outcome. The speaker challenges this notion, arguing that it hinders the adoption of new, privacy-safe advertising channels like retail media and CTV. He explores alternative measurement methodologies, such as automated incrementality testing and next-generation media mix modeling, which offer more holistic and statistically robust approaches to evaluating marketing campaigns. The podcast uses the example of John Wanamaker's famous quote about wasted advertising to illustrate the inherent uncertainty in marketing measurement, even for successful businesses. Ultimately, the speaker advocates for moving beyond deterministic identity-based measurement to embrace more flexible and scalable methods to maximize marketing effectiveness in the evolving digital landscape.