Explore the fascinating intersection of quantum mechanics and black hole physics in this online workshop lecture. Delve into the concept of holography and the experience of bulk observers as presented by Lampros Lamprou from the Massachusetts Institute of Technology. Learn about atmosphere operators, natural clocks, proper time, and infalling probes as they relate to black holes. Gain insights into the internal notion of time within these cosmic phenomena and engage in a thought-provoking discussion on the implications of these concepts for our understanding of spacetime and gravity.