The Clockmaker's Paradox

Elias Carter had always been a time aficionado. Not in a purely philosophical sense - he didn't care about fate or destiny - but about control. Precision. An ability to recover from a mistake and try again.

And tonight, after years of counting, failings and near-failures, he was going to do the impossible.

His workshop was dimly lit, and the sounds were the steady ticking of several dozen clocks framed on the wall above him. At his workbench in front of him there were tools and scattered papers and the device that had consumed his life -- a small, unassuming pocket watch.

But inside, it held something far more powerful.

Elias wiped his palms against his work clothes. He 'd done the Rewind Mechanism hundreds of times under controlled conditions and everything seemed to be going well.

No more second-guessing.

He took a breath, pressed the button, and held it.

It hummed, and then a slight vibration ran up his arm and made his skin tingle, then the air moved in the room like all of the world just stepped out into the world - a breath - and was waiting to exhale.

The lights flickered. A high-pitched whine filled the space.

Then-click.

Silence.

Elias exhaled, blinking. Everything looked the same.

He raised his eyes to the nearest clock. The second hand hed been clocked on steadily. He checked the watch on his wrist. It was exactly three hours ago.

It had worked.

A slow grin spread across his face.

I did it.

Frightened, he turned to pick up his notebook to write down the results --

And froze.

Someone was standing in the corner, hard to see in the dark.

His fingers whirled around to the wrench on the table. "Who's there? "

The figure stepped forward. The light caught his face.

Elias's stomach dropped.

He was looking at himself.

Not a reflection. Not a shadow.

Himself.

His own expression, his own face... the shock in his eyes and confusion in his own head.

The other Elias blinked then inhaled heavily then walked back and spoke with a low, sharp voice. "What did you do? "

Elias couldn't answer. He couldn't think.

And then-before he could move, before he could breathe-

The other Elias vanished.

Gone.

Like he had never been there at all.

Elias sat at his workbench, fingers digging into his hair.

His journal lay in front of him, pages scribbled in fevered frustration: Equations; explanations, none of which made any sense.

He only rewound time by three hours. That 's it. No time loops, no paradoxes, no duplicates.

And yet...

He had seen himself.

For the first time in his life, logic failed him.

He had to test it again.

He reached for the device. Hesitated. His hands were shaking.

Press. Hum. Click.

The same shift. The same silence.

Elias turned slowly, scanning the room. No one there.

Relief flowed down his spine. Maybe he had just got tired. A hallucination.

Maybe he was too battered by his own obsession to do what he wanted to.

Then-a knock at the door.

Elias's heart nearly stopped.

No one ever visited this late.

He moved his body before his brain could catch up. Swiped his hands on his apron, took a deep breath and opened the door.

Crowded on his doorstep, Claire Dawson clutched a heavy folder of notes to her chest.

She looked exhausted. Frustrated.

"You weren't answering your phone, " she said quickly past him before he could pull her over.

Elias had to take it in at last before she just dropped the folder on his desk.

"I ran the numbers again, " she said, flipping pages between them, "the energy output on the last test- it was not constant. There was this fluctuation exactly three minutes after activation. That's not normal. "

Elias stiffened.

Three minutes after activation.

That was exactly when he had seen... himself.

Claire was still talking. "I think the device is actually doing something other than rewinding time. Maybe there is an overlap, a change in - "She stopped with her eyes shut. "Are you even listening? "

Elias pressed himself into it. "Yea. Overlap. Change of energy. "

She studied him. "You look like you have seen a ghost"

He swallowed. Not a ghost.

A version of himself that wasn't supposed to exist.

Claire sighed a pinched the bridge of her nose. "You need a rest. You've been riding on fumes for days. We can talk about this in the morning. "

She turned to leave.

And Elias almost let her go.

Almost.

But then he considered what the other Elias had said to him: Unnerving. Worried.Like he wasn't the one in control.

And something inside him cracked.

"Claire."

She paused in the doorway.

Refusing to swallow, he squinted at the floor, "You've gotta check something for me. "

She frowned. "What?"

He took a look up and pushed the words out, "I think I saw myself. "

Her brows knitted. "What?"

He headed out of the room towards the desk, pacing. "Not a reflection. Not what a trick of the light. A duplicate. Standing right there. " He pointed to the corner of the room. "He looked at me, he spoke to me. And then he vanished.

Claire didn't laugh. Didn't scoff.

She just stood there, eyes sharp, calculating. Thinking.

Finally she said, "How many times have you used the machine? "

Elias blinked. "Twice."

Claire took a pen and wrote something on a napkin.

Elias took a step closer. "What are you doing?"

"Running numbers, " she cracked, "because if what you're saying is true... then maybe every time you go back in time... "

Her voice cut off as she looked at her own notes. Pale face.

Elias felt his stomach clench. "Claire."

She looked up at him, and for the first time since she'd gone through his door she looked scared.

She turned the napkin toward him. The equation was simple.

But the answer was horrifying.

Every time he used the machine, he wasn't going back.

He was leaving a version of himself behind.

Elias leaned over his workbench, smudged fingers smeared with ink, equations filling half a dozen notebooks. The pale yellow light of the overhead lamp fought only weakly against the shadows of the workshop, but he didn't care.

He was on the brink.

The prototype sat on his workbench, whirring softly-a small, finicky device no larger than a pocket watch. Six years of relentless toil had led to it. Six years of failures, of figures that never did add up. But now, finally, he had it.

An operational time-reversal device.

Not time travel, not in the sense people imagined. No jumping into the past, no altering history. Just a systematic rewind.

A means of reversing errors.

And tonight he was going to try it.

His heart racing, he turned the dial. Five minutes. That was all. A little, controlled rewind-nothing sensational. If it succeeded, he'd be back exactly where he was five minutes before, the memory of what had just occurred still with him.

He let out a breath. Pressed the button.

Click.

The machine hummed. The air changed, growing heavy like the prelude to a storm.

Elias felt it-a pull, a dragging, as though something was unspooling inside of him. The room flashed. The wall clocks stopped.

Then-release.

He breathed in sharply. The feeling whipped back, and he was dizzy but... present.

His eyes darted to the desk. The ink blur he had smudged on his papers five minutes ago was gone. The coffee cup he had moved was back where it belonged.

It worked.

It actually worked.

A grin creased his face. "Holy shit."

But before he could get his hackles up-

A creaking board echoed behind him.

Elias's eyes locked. His breath froze in his chest.

He wasn't alone.

Slowly, thudding heart, he turned his head-

And his blood ran cold.

Standing in the shadows, half-hidden by the dark glow, was himself.

Another Elias.

Same face. Same outfit. Same wide, scared eyes.

Elias's stomach churned. His mind stumbled for sense, for sanity. This was impossible. No copies existed in time-reversal theory. No alternate forms of himself.

And so why was he standing there staring at one?

The other Elias stared at him, locked up. Chest expanding and contracting in ragged breaths.

Then, near-whisper-"Don't use it again."

Elias caught his breath. His throat constricted.

The other Elias took a step back, shadows running across his face. His face was abject fear.

"You have to listen," said the duplicate, his voice scraping. "You don't know what you just did."

Elias attempted to speak. To say something-anything. But his tongue was leaden, his body planted.

Then-the duplicate flickered.

Not like a person coming into the light. Like a glitch.

For a moment, his form twitched, rent asunder, and reassembled-as if he weren't quite present.

Elias's stomach was knotted.

"What the fuck are you?" he panted.

The replica winced. His face screwed up-like he had something to tell him and couldn't.

Then as suddenly as he had appeared-he vanished.

No sound. No disintegrating.

Just-poof.

The silence that remained behind was deafening.

Elias sat, panting, staring at the spot where he had been.

This couldn't occur.

The mathematics didn't allow for this.

He staggered to his feet, knocking over a pile of books. His hands trembled as he grabbed his notebook, ripping through pages, seeking an answer.

But no matter how many formulas he went over, no matter how many theories he re-did, it all led to one frightening conclusion-

His machine hadn't merely rewound time.

It had left a remnant.

A thing that does not belong.

And, of all things?

That other Elias... had feared him.