[ yeah, that can't be too useful in a place like this. or at least, the obvious uses are lost. there could be something more to it, but eliot defers that train of that for later. ]

It's a bit more complicated than that. A lot of physics are relative, so. Light messing up means that a lot of other things are messed up. Things like lenses, parabolas, even the idea of spacial density. A lot of those rules end up broken, especially since dark is usually just the absence of light, but here, it's not the absence of light but the presence of dark. Something that eats up light instead.

...which is just. Kind of insane in terms of natural law.