Been fever-dreamin' some DIY material layering and light sources (before I get to the chapter 7 of the second book).
The amount of noise from emissive materials is.. ugh. Apparently this is why we bother with "light sources" instead of just dropping some light bulbs here and there.
OTOH, the human visual system is quite shite^W noisy in low light too. And that's even with all the built-in "neural denoising".
Maybe if it's neurons were activated by light instead of being suppressed (yes, it's inverted in there too) there would be far less noise. But that may push it out to bright light instead. And being activated most of the time will give higher levels of oxidative stress/faster degradation.
Tradeoffs everywhere...