A traveler trying to find his way in a dark cave finally manages to light his lantern. but the light keeps flickering to understand the size of the cave. Finally, she realizes that it is ahe who creates the cave. As it grows, it grows in the cave and becomes smaller as it gets smaller.
This technique allows me to direct the light as I want, and I can reproduce it over and over again without fear of making mistakes. Here, light turns into the only element that creates planes, and its mode of production, that is, how we erase it, constitutes the only clue about that space.