(Followed by a summary)
I agree with uccisore greatly.
I believe that the next step in our further understanding the nature of reality will be to rigorously comprehend relativity (not specifically einstein’s theory, nor “relativism” in this case). It is efficient for us to often specify things in terms of existence and absence and be deterministic. The greatest whole of reality might be deterministic, but the qualities of what we experience may not be. The paradox of Schrodinger’s cat is an important consideration in metaphysics and epistemology but is not practical for daily life.
In other words: It is practical, even necessary to survival, for us to think in terms of things and their opposites quite strictly. But if we want to split hairs on the reality of the matter, then there is an absence of any standalone concept whatsoever. Think of math as you move from an understanding of algebra and into calculus. At first its easy pulling the legos apart and mix-and-matching them as symbols. But in order to really make fundamental calculations, you have to start thinking in terms of curves and generality. You specify it as much as possible, but the straight or solid line is . . . just not there.
Example: We fare quite well having a number line across two axes, tracking the trajectory of a rocket to land on its target asteroid. But to be fundamental we would also have to admit that the rocket matter only tends to exist (luckily a strong tendency) and thus the line may not remain so solid or may not be fully definable in just those two axes.
Think in terms of science. Once you explain it down to the fundamental particles and enter quantum foam, or conversely astrophysics, and explain it to quintessence aka dark energy, (exotic matter is . . . filling in the gaps of something else)- you end up with all sorts of paradoxes . . . or in other words . . . oxymorons that don’t seem to have an alternative.
I think it’s destructive to try explaining this by hamming up a movie entitled “What the bleep do we know” and throwing together some scientists with some new age schmos, to crudely interpret this relativity. I think it’s better to say that we’re getting a good idea, but we just can’t quite put it in our own words.
To be more blunt about light and darkness, I would agree that light seems to be the . . . “it” and darkness the “not” simply because we know a photon of light and an electromagnetic wave is emanating in a ray of light. It triggers changes- transfers energy. There is no ray of darkness (in conventional science) identifying any particles, waves, or rays which influence any energy.
On the other hand- “cold” and “hot” are both “its” because they are both particles just at different rates of speed. And supposedly the absolute coldest (“Absolute zero”) is not actually a zero in terms of movement (time doesn’t just stop). It’s just the minimum physically possible- the least density which a gas can expand.
SUMMARY: I doubt there is any individual concept, but we assume there are because we couldn’t progress by trying to leap into that mode of thinking at our stage of understanding. It is practical for us to think like agincourt. But eventually we have to consider the prospect presented by uccisore.