Most display technologies output RGB light, which means you’re already forced into an output methodology that’s relying on deception purpose-built for human bio

Most display technologies output RGB light, which means you’re already forced into an output methodology that’s relying on deception purpose-built for human biology and psychology. Because of that, the layer of your model concerned with the physical reality of light doesn’t seem super useful for basic image input and output. But of course this layer is incredibly useful for stuff like computer graphics, where it is indeed the case that physically based rendering is widely used for offline CGI rendering (and increasingly for realtime video game rendering).