The stairwell smelled of damp concrete and discarded fliers. The building's rear exit led to a courtyard lit by an old sodium lamp. There, for a heartbeat, the world collapsed into the scope's predicted frames: a figure on the far edge of the yard, hood raised, hands in pockets. But they were not looking toward the lab; their head tilted toward the river, listening. Elias exhaled. The future had been many things at once—threat and misdirection and a mirror.
The device hummed differently afterwards, like a kettle thinking. On the screen, a waveform that had been ordinary before now braided itself into layered harmonics—ghost traces overlapping the present. Elias fed a known test signal: a clean 1 kHz square wave. The scope returned not one trace but a chorus—an echo of measurements from seconds ahead and behind, overlaying themselves with impossible precision. The timestamp readouts bent and shimmered: 02:14:08, 02:13:59, 02:14:21. The scope had stitched moments together.
At first he thought it was a timing bug. Then the scope displayed a trace that he had not produced: a slow, patient sine wave at a frequency that matched the rhythm of his own pulse. A string of ASCII scrolled along the bottom of the display as if pressed by invisible fingers: DO NOT LISTEN.