The Evolution of Binaries

Is it possible for either side of a binary to exist on its own? And the simple answer is no. So if we have two sides of a binary like this, we begin to see now that the split between them isn't set in stone. It's always moving and shifting. That is how the binary itself is framed. Take another example like gender between men and women. There are kinds of cultural markers that would determine whether someone fell into the camp of being a woman or being a man.