Nothing, he realized—not bleak nothing but tactile nothing: empty benches, unused lanes, the low-status corners of the day—was porous. It sucked in attention like a sponge and redistributed it as possibility. On the cart, motion made small things heroic. A plastic coffee lid glittered like a coin. A single green weed sprouting through a crack became an obstinate flag. The hub’s sound was a metronome for noticing.