People say shit like this, but it’s just not true. If darkness is the absence of light, then it’s dark so long as there isn’t light. If you observe a universe where there are no photons, it’d be dark everywhere. (it’d also not have the EM force, but let’s put that aside for now.) You can have darkness without light, but if you aren’t aware of light, then you simply wouldn’t have a word for darkness; you are confusing the conceptualization of thing with the thing itself. In my circles, we refer to this fallacy as confusing the map and the territory.
I’m a mathematician. I work in multidimensional spaces. Did you know you can have coordinate systems with boundaries? You can also have universes where movement is possible in a particular direction, but not the other. We actually live in such a universe; you can only move forward in time.
Your entire argument is “I can’t imagine darkness without light, therefore it’s logically impossible.” All you’ve proven is that you lack an imagination and don’t understand logic.
This is the least coherent thing I’ve read all year. Congratulations.