Gradually he realized that the Tube map was a handy fiction that made life easier but bore no resemblance to the reality of the shape of the city above. It was like belonging to a political party, he thought once, proudly, and then, having tried to explain the resemblance between the Tube map and politics, at a party, to a cluster of bewildered strangers, he had decided in the future to leave political comment to others.
Living in a city with a subway, I know IT IS much like that, lol. I did not expect this to fit the Monorail square this neatly too.
He continued, slowly, by a process of osmosis and white knowledge (which is like white noise, only more useful), to comprehend the city, a process that accelerated when he realized that the actual City of London itself was no bigger than a square mile
This is really what coming to live into a big city felt like.