Explore the fundamental nature of spacetime and delve into the mysterious world of black holes in this 55-minute master class lecture by theoretical physicist Veronika Hubeny. Recorded at the World Science Festival in New York City, discover how the gauge/gravity duality is used to develop a deeper understanding of black holes and their intriguing connections to quantum information theory. Gain insights into cutting-edge research in theoretical physics and expand your knowledge of these enigmatic cosmic phenomena. For a more comprehensive learning experience, access the associated free online course available at World Science U.