Sabine Hossenfelder , Carlo Rovelli, and Eric Weinstein debate quantum physics, consciousness and the mystery of reality. Brian Keating hosts. We imagine physics is objective. But quantum physics found the act of human observation changes the outcome of experiment. Many scientists assume this central role of the observer is limited to just quantum physics. But is this an error? As Heisenberg puts it, "what we observe is not nature in itself but nature exposed to our method of questioning." In all our studies of reality and nature then, the observer plays a role -- not just in quantum physics. Should we recognise science can never access reality independent of the observer? Should we re-define science not as uncovering objective reality, but as uncovering the functions, limitations and structures of the mind of the observer themselves? And if we cannot remove the observer, might quantum physics help us to understand the observer - as Roger Penrose suggests consciousness "reeks of something quantum mechanical." The Institute of Art and Ideas features videos and articles from cutting edge thinkers discussing the ideas that are shaping the world, from metaphysics to string theory, technology to democracy, aesthetics to genetics. Subscribe today! For debates and talks: https://iai.tv For articles: https://iai.tv/articles For courses: https://iai.tv/iai-academy/courses