The character reflects on the nature of existence, comparing the world to a revolving door. He contemplates how one's circumstances seem random, with no clear connection between choices or outcomes. This visualization speaks to the unpredictability of life and our position within it.
Furthermore, he grapples with the idea that since there is no coherent flow or logic to the way events unfold, the choices we make may ultimately hold little significance. This perspective suggests a sense of futility, as the direction in which we find ourselves is dictated more by chance than by our decisions.