Explore a 42-minute conference talk from the Workshop on Qubits and Spacetime, delivered by Raphael Bousso at the Institute for Advanced Study. Delve into the complex topic of "Black Hole Coarse Graining, Connes-Cocycle Flow, and Its Bulk Dual." Examine key concepts such as entanglement wedge complementarity, ensemble interpretation, and information loss in black holes. Investigate the cost of unitarity, classical and quantum black hole coarse-graining, and the Ant Conjecture. Learn about the vacuum modular Hamiltonian and the bulk dual of Connes Cocycle Flow. Gain insights into the quantitative testing of these theories and their implications for our understanding of black holes and spacetime.