The text outlines the evolution of product development from a traditional, time-consuming process to a modern, rapid iteration approach, particularly in the context of AI-powered applications. Historically, product development involved long cycles of offline testing and evaluation before reaching users, but this has shifted with the advent of publicly available foundation models, which allow for quick integration and testing of AI features. The current paradigm emphasizes speed and user interaction, with new tools like Statsig facilitating this by enabling partial rollouts, standardized logging, and data-driven feature refinement. This shift has democratized AI development, allowing more engineers to participate and innovate rapidly, albeit with the need for careful management to avoid pitfalls such as bias and misinformation. The narrative underscores the importance of a supportive toolkit and a culture of experimentation to thrive in this rapidly changing landscape.