Conventions

Black and white represent two worlds that are as opposed as possible. Their combination creates infinite numbers of gray values, that vary in each image. This example is about reversing monochrome images exactly. The result reflects a “negative”, so to speak, of the original picture.
You know a “negative” in practice when developing a film of an analog camera. There the finished image is then created from the negative. In this case the „negativ“ is generated by computer from the already existing monochrome image. The question is how such a “negative” works, what is recognizable, to what extent does reality exist?
The original image is in this case monochrome, it has no colours and thus it has one less feature of reality. Moreover, every picture, whether colored or monochrome, has the ability to capture only one moment, but reality is constantly changing. In the end, a “negative” looks like an imprint of the original image. Where white is present, black is pictured and  the other way around the same.
Seen in this way, you are dealing with a parodoxon. By comparing them with each other, there is an absolute contrast, as we have just seen. At the same time, however, the content of both pictures is identical.
So you find yourself in a world made up of black and white or in the same world consisting of white and black.