Height of each stair 25cm, 26cm, 27cm, 28cm, 29cm……
When the audiences go up the stairs, they will feel the growing height of each stair. Gradually, the height of each step goes out of the tolerable height of human being.
To make something in between,
To make it related... to make it separated...
It is also talking about the issue about the judgment of the vision and the
cognition in the same time and the same space.