Digital Twins and Virtual Twins: What Are They and What Do They Do for Humans?

In this month’s episode of the Harvard Data Science Review Podcast, we explore the rapidly evolving concept of digital twins—dynamic, data-driven replicas of complex systems—and their growing influence across engineering, cities, healthcare, and society at large. Blending real-world case studies with big-picture insight, the discussion highlights how real-time data, sophisticated models, and massive computing power converge to let us safely test ideas, anticipate disruptions, and design smarter systems. Just as importantly, the episode tackles the critical questions of ethics, privacy, and public trust, making it an essential listen for anyone interested in where data science is headed—and how it can responsibly shape the world we live in. Our guests: Rachel Franklin is the executive director of the Center for Geographic Analysis at Harvard University  Patrick Johnson is the executive vice president of Corporate Research and Science at Dassault Systèmes