I wanted to fix the instant an ordinary touch becomes an interface and the city answers back. I chose a horizon split between rust-amber street heat and blue-white LED cold, then threaded weightless mercury nerves through a warming handprint so digits could stutter into new routes; a temporal palimpsest patch overlaps pre-residue, the live event, and its scar, recursively overwriting itself so you feel time smear under your palm. Look for the moment your proprioception slips—the crack where skin-circuit laminate peels and reseals—and notice how a fallen phone’s warm cadence quietly scales distant numbers as if your breath were already part of the transit system.