What?
Wtf is day and not day lol plus darkness is literally not-light
Like saying the duality of existence is not existence rather than nothingness
Vietthai already answered you but I’ll explain further. Light and Not-Light is a
Logical Negation, and thats how you qualify for ND ( at least that’s how DT says how ND works). Light and Darkness are simply just two opposing forces, aka an
OPPOSITION. Think of it like this:
Light and Darkness- Imagine one entity called light, if light exists -> true. If light doesn’t exist-> thats not-light. But not-light isn’t another entity, it’s just “light is absent.” It’s like flipping a switch. Light on vs. Light not-on. So here, we only ever talk about Light itself and whether it’s there or not.
Light and Darkness- Now picture two separate entities, One is light and the other is Darkness. Let’s say both are in a story. For Light and Not-Light we have this: If Light isn’t in a scene, the narrator just says: “Light is not here.” There’s no new character, just an absence.
But for Light and Darkness however, you have this: In a story, Light has a rival character named Darkness. When Light leaves, Darkness shows up, he steps in, acts, and influences the story. He’s treated as a presence, an enemy. So two distinct entities that are opposites of each other.
In conclusion:
In logic: Light is present (P), And Light is not present (¬P).
In opposition: Darkness is a constructed counterpart to Light, given its own conceptual “body.” Unless that staff thread for ND passes, then for now, ND is based on
Paraconsistent Logic which Light and Darkness, Life and Death, Hot and Cold just don’t qualify to.