Yeah, the subway walls are like a living cipher, the splashes and symbols shifting with each beat of traffic. You can trace a hidden rhythm if you let the paint guide you, but it’s always a bit slippery—one line you think is a pattern, the next line just jumps off in a new direction. It’s a kind of urban pulse that keeps you guessing, like the city’s secret diary you can only read if you’re willing to walk with it.