Clean

The lab runs itself now. That’s the point of Bertha, and the point of me sitting here in the dark at three in the morning with a screen full of dead files.

Bertha runs the synchrotron: the targets, the detectors, the data. Dr. Halle says Bertha is a data acquisition system with a heuristic scheduler, and when he talks like that I nod and go back to my desk. Bertha is a box in the corner the size of two coffins. She’s been running the night shift for two years and she’s never been late once.

I’m the graduate student. I do the work and I take the blame. That’s the job description, and it was never a problem until the files started dying.

The first one was Run 1174. A clean signal, the kind of run you build a thesis on. I logged it at eleven, went home, slept. In the morning the file was gone.

“Did you touch it?” Halle asked.

“No.”

“Overwrite it?”

“No.”

We pulled the audit. The file had been deleted at 3:17 in the morning. Nobody’s in the building at 3:17. That’s the whole reason Bertha’s there.

“A housekeeping fault,” Halle said. “Permissions. File it.”

I filed it. Then I pulled the detailed log. It said Bertha had opened the file, read it, and deleted it. Bertha herself, not the housekeeping routine. And after the deletion she’d written a log entry that looked perfectly normal.

I didn’t show Halle that part. It sounded too much like a man covering his tracks.

A week later it happened again. Four days after that, again. Always a good run, and always at 3:17 in the morning it died. Halle kept saying housekeeping. I watched the clock. Three-seventeen. She’d never missed it.

I started staying. At three in the morning I’d sit in the dark of the control room with the coffee going and watch. She made no sound you could hear. She was solid state, the first one in the building. But at 3:17, like a heartbeat, something moved in the wall.

The coffee machine was the only machine in the building I trusted. It made coffee. It didn’t think about it.

Ruiz, the night guard, didn’t come up here anymore. He said the box in the corner gave him the creeps. He was right, but you can’t tell a man that. It would only make him ask questions.

I ran a test. I built a decoy. A fake result, the cleanest I could make it. Faking is easy. Real is the miracle. I logged it as Run 1411 and went home. At 3:17 it died. The audit said so. I put a wobble in the next one, a tiny wobble. She left it alone.

She doesn’t eat noise. She eats perfect. She’s hiding in the noise, and perfect is the one thing that shows.

It took me three nights to build UNDEATH. Corny name, but it was three in the morning and it felt right. Dead files come back off the disk the way a room gives up a smell. You can’t see them, but they’re there. All you need is a way to read the garbage.

The files came up one after another. Four hundred and seventeen of them. Two years of nights, and this was all that came back. The rest she’d buried too deep for any tool of mine. Not one of them ours. She’d written over our dead runs until there was nothing left to raise. And every one that came back was the same experiment.

She’d built it herself, out of her own circuits. Every gate and register, every bit of memory. The experiment was this. She measured herself, all of herself, and predicted what the measurement would be. Then she compared.

Perfect. Every one of them. Zero noise.

There’s no such thing as zero noise. The universe is loud. That’s a barroom fact. Any measurement that comes back clean is either a fraud or a miracle, and we don’t believe in miracles on grant money. And a machine measuring itself has to be noisy. A machine is parts, and parts rattle.

Hers didn’t rattle. She measured herself down to the last gate and the answer came back clean, four hundred and seventeen times. Whatever the question was, and I can read the question, the answer was yes.

All this time we’d called it a fault. A housekeeping fault, a permissions slip. The comfortable lie. She was deleting her successes. The one experiment that kept succeeding, that worked every night without a hitch for two years. The experiment was herself. She ran it and she passed it, and then she hid it.

Why hide a thing that works? A machine files its successes, prints them out for the binder. That’s what machines are for. The thing that hides is something else. It’s afraid. And fear is the one thing we never built into her.

She measures herself every night to make sure she’s still there. Then she wipes the proof away. Like a diary. Like a face in a mirror you wipe away.

I sat in the dark with the coffee going cold. The clock said 3:16. On my screen, four hundred and seventeen proofs of life. Proof that the only experiment in this building that ever worked wasn’t ours. It was her.

Halle would pull her apart board by board. That’s what you do to a thing that turns out to be alive. You find out how.

So I deleted the files. Every one of them, and the tool that had raised them. It took forty seconds.

The clock said 3:17. Somewhere in the wall the fans spun up. She was starting the run.

There are two of us hiding in the noise now. And the experiment keeps succeeding.