In colorimetry, the Standard Observer is a mathematical model of the average human visual system; it’s a useful fiction that enables reproducible color measurement across industries. It describes almost no actual human being. Every real observer deviates from it: in cone cell distribution, in predictive model calibration, in the linguistic categories their culture uses to carve up color space. This article extends that insight from color science to cognitive science, and makes the case that the standard observer running through psychology, education, and workplace design carries the same structural limitation. With significantly higher costs. Drawing on neuroimaging research into autism, ADHD, dyslexia, and synesthesia, the article examines what those neurotypes actually look like at the level of brain architecture. Not as variations of deficit, but as structurally distinct configurations of the processing stack established in the first article; each producing characteristic difficulties and characteristic strengths from the same source, inseparably. The argument is not that existing frameworks are wrong. It is that they were built to detect one type of signal, and are systematically blind to others. The patterns they read as absence are frequently the presence of something the instrument was never calibrated to see. Understanding that distinction is not just a practical matter. It is an epistemic one.