AI, quantum computing, big data and digital twins are transforming how we understand and produce knowledge in the social sciences. What are the implications of such technologies for what we know - and how we know it? This book explores these critical questions, examining the epistemology of the digital. Bridging technology with sociological theory, it challenges social scientists to rethink research design, methodology and the creation of social knowledge in the digital era. Essential for students and academics, it provides a rigorous, forward-looking guide to navigating digital transformations in social inquiry.