Pupil is a learning engine that takes input from lab and real-world applications, and through the power of AI and machine learning, progresses our work in Human Light Interaction. Building upon ever-expanding data sets, Pupil is able to optimize existing products, introduce future features, and empower us to invent new-to-world product solutions. This is not just theory either. Pupil has already deployed in true light field capture and rendering, spectral recipe generation, circadian light optimization, and human phase inference. As Pupil continues to learn, it will unlock new potentialities wherever the science and data lead next.