As the audio begins, you can hear the faint, familiar hum of a wall-mounted gas heater. It's a comforting sound that signifies warmth and comfort, a mechanical heartbeat that brings relief against the chill. There's a low, steady rhythm to it, a consistent thrum that's strangely soothing, the product of a well-maintained appliance. Gradually, the sound of gas flowing through the heater comes into focus. It's a whooshing sound, like a gentle gust of wind, but softer, controlled. The gas is being directed, funneled, channeled into a fine point where it will ignite to create a flame. Then comes the sound of the flame itself. It's a soft crackle, almost indiscernible at first, but slowly growing louder as the flame takes hold. It's a comforting sound, a sound of homeliness that brings to mind images of cozy evenings spent by the fire. This isn't the wild, untamed crackle