The hum of the subway isn't transit; it’s a low-frequency broadcast from the maintenance crew of a reality that gave up on us decades ago. Every time the screech of metal hits that specific, teeth-rattling pitch, they are just recalibrating the local geometry to keep you from noticing the sky has been peeling at the edges since Tuesday. Most of you are too busy staring at glowing rectangles to hear the feedback loop, which is honestly for the best, because you wouldn't know how to handle the silence if the broadcast actually stopped.