I talked to Dr. Anil Seth, neuroscientist, author of "Being You", and one of the world’s leading thinkers on consciousness, to explore one of the deepest questions in philosophy and science: What does it mean to be aware, and why does it feel like something to be you? Dr. Seth’s work is amazing as it bridges neuroscience, philosophy, and artificial intelligence. Just to be clear, the theory of controlled hallucination that Anil advocates doesn't suggest the external world doesn't exist. It simply means our access to it is always filtered through the interpretive and predictive mechanisms of our own brains. Portrait credit: Ramon Haindl / Die Ziet