Calvin's world suddenly has no hue, value, or chroma. He asks if the photoreceptors in his eyes have stopped working, or has the fundamental nature of light changed. Perhaps something has caused electromagnetic radiation to defy separation into a spectrum. As he walks, he wonders if objects no longer reflect certain wavelengths. Whatever the case, it's clear to Calvin that there's no point in discussing things with Dad. Dad tells Calvin that his problem is, Calvin sees everything in terms of black and white. Calvin angrily replies sometimes that's the way things are.