Explore the intersection of software development and scientific inquiry in this 57-minute conference talk by Jessica Kerr. Dive into the process of investigating and creating software, drawing parallels between developers and scientists. Learn how to skillfully explore the software ecosystems we inhabit and craft intuitive, user-friendly environments. Discover the importance of mental models, worldbuilding, and backwards compatibility in software development. Gain insights on refactoring, legacy code, and overcoming the fear of change. Examine the role of consistency and the creation of new instruments in software engineering. Understand the complexities of CSS, inline layouts, and developer tools through practical examples and philosophical perspectives.