So, is your point the concept of yin and yang or opposites being necessary to each other's existence?

By the way, nothingness is definitely not blackness. Blindness would probably result in seeing blackness, but that's not it. Nothingness is the same color as... Well, look straight ahead or something. You should be able to see the boundaries of your field of vision, an eye shape sort of. You can see the colors within it, the colors of the universe when colors are perceived with a brain. Now shift your consciousness and ponder what it looks like outside your field of vision. You'll find that your eyes try to move towards the boundary you are trying to see, or your head moves, but the boundary is still there. Void/nothingness is beyond the boundary.

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