But within the visual spectrum but not showing on the screen is still within the visual spectrum. The article examples refer to infrared and UV+ for contrast, and that's entirely correct. Monitors displaying either of those would make no difference (well, beaming ionizing EM at your face raises significant concerns audio doesn't at any level) at any point. They're simply beyond human eyes period. It's an accurate analogy. Failing to reproduce something within human limits would be what you're talking about, but that's a solved problem and not something 24/192 offers you anything with.