The story begins with the old man plodding. Plodding. He is leaning forward, he is weary. He may be passing interesting things, a bus, a train, travelling through the city, into the country, we know because we can see the scapes passing by behind the old man, but he doesn't see because he is looking down. Staring at the ground, not making eye contact, not needing to say anything to anyone, just getting to where he is going. That is what plodding is.