A Riddle Written on the Brain
The sensation of red light falling on your eyes has something in common with the experience of looking at a cartoon in the New Yorker. The phenomenal quality of the sensation and the funniness of the joke are both properties of your subjective take on an external event and both arise in two steps. With sensations, (1) your brain responds to signals from bodily sense organs with an internalized evaluative response; (2) your mind reads this response and represents what it's like as the subjective property of redness. With jokes, (1) the cartoonist creates a clever drawing; (2) your mind takes in the drawing and represents what it's like as the subjective property of funniness. This analogy -- deliberately deflationary -- helps elucidate the nature of phenomenal consciousness and its neural correlates, and exposes the 'hard problem' as a conceptual error.
