Then there’s the separate mystery of why you have a subjective experience, which David calls the hard problem. When you’re driving, you’re experiencing colors, sounds, emotions, and a feeling of self. But why are you experiencing anything at all? Does a self-driving car experience anything at all? If you’re racing against a self-driving car, you’re both inputting information from sensors, processing it and outputting motor commands. But subjectively experiencing driving is something logically separate—is it optional, and if so, what causes it?
