The problem with remembering everything was that, eventually, you started assuming you actually did.
I discovered that on a Tuesday afternoon while staring at a technical article on my laptop.
The article was old by my standards, not because the technology itself was outdated, but because I remembered reading about the same development during my first life.
I remembered the laboratory where I had first seen the finished system, the equipment surrounding it, and even the faint electrical hum coming from the cooling system.
I remembered the efficiency improvement, the material composition, the basic principle behind the design, and a conversation one of the engineers had with his supervisor after the demonstration.
I even remembered the engineer’s face.
What I couldn’t remember was his name.
I stared at the screen for several seconds before closing my eyes and trying to reconstruct the memory.
The laboratory returned almost immediately: white walls, glass panels, three monitors on a workstation to my left, and a coffee cup beside a keyboard.
I could see the engineer standing near the equipment, wearing a blue jacket with a small scar near his left eyebrow.
I remembered his voice and the general subject of the conversation.
But his name wasn’t there.
Neither was the company’s name.
“Come on,” I muttered.
I opened my notebook and wrote down what I knew.
Future technology: remembered principle and specifications.
Developer: unknown.
Company: unknown.
Date: uncertain.
I stared at the four lines for a while before adding another.
Memory is not knowledge.
I leaned back in my chair and let out a slow breath.
That should have been obvious, but I had spent so much time treating my memories as if they were some kind of perfect database that I had stopped thinking about what a database actually contained.
HEMS had never given me information I had never experienced.
It preserved what I had seen, heard, studied, and understood with extraordinary precision.
That was the important distinction.
If I had spent hours studying a machine, I could remember its construction almost perfectly.
If I had personally witnessed an event, I could reconstruct an incredible amount of detail from it.
If I had listened to a piece of music enough times, I could reproduce the melody and pitch with almost absurd accuracy.
But if someone had mentioned the name of a company’s chief financial officer during a meeting that had nothing to do with my work, there was no reason for my brain to preserve that name simply because it happened to be spoken.
If a technician had casually mentioned who designed a component I was using, I might have heard the information without ever considering it important.
If a company announced a new product while I was focused on something else, I might remember the product itself without remembering who manufactured it.
HEMS could preserve information I had encoded.
It couldn’t magically decide that something I had ignored was important.
That realization changed the way I looked at my memories.
I had been treating my first life like a map, assuming that if I remembered enough, I could simply follow it toward the future I wanted.
But a map only shows the roads that were recorded.
It doesn’t show every person who walked along them, every conversation that happened beside them, or every decision that was made somewhere outside the map.
I turned to a fresh page in my notebook and started organizing my memories into categories.
Confirmed Memory would contain information I had personally experienced and remembered clearly.
Observed Memory would cover things I had witnessed but might not have completely understood.
Secondhand Information would include things I had learned from other people, documents, news reports, or other sources.
Uncertain Memory would cover anything I remembered only partially.
Finally, there was Unknown, which would contain things I knew had happened but couldn’t reconstruct.
I began moving some of my existing notes into those categories.
Important dates I personally remembered went under Confirmed Memory.
Technologies I had encountered during my work went under Observed Memory unless I had personally studied them.
Business events I remembered hearing about went under Secondhand Information.
Predictions I couldn’t completely reconstruct went under Uncertain.
The more I organized them, the more obvious the problem became.
My memory wasn’t a crystal ball.
It was an archive.
A very good archive, perhaps one of the best possible, but still an archive.
And archives had limits.
I added another note beneath the categories.
Never confuse confidence with completeness.
I paused, then underlined it.
That was something I needed to remember.
Ironically.
I noticed the second problem later that afternoon when Rosalie caught me staring at the same notebook for nearly ten minutes after class.
She was sitting beside me with her bag resting on her lap, absentmindedly tapping her fingers against the strap.
Most of the students had already left, and the classroom was gradually becoming quieter.
“You’ve been staring at that notebook for ten minutes,” she said.
I looked down.
She was right.
“Have I?”
“Yes.” She tilted her head.
“You’ve been doing that a lot lately.”
“Doing what?”
“Thinking.”
I almost laughed.
“I’m always thinking.”
“I know.” She smiled.
“But lately, it’s different.”
I closed the notebook and placed my pen on top of it.
“Different how?”
“You look like you’re trying to solve a problem that isn’t written anywhere.”
I glanced toward the window.
Outside, students were slowly making their way toward the school gate.
A few were talking near the entrance while others were buying snacks from a vendor across the street.
It was an ordinary afternoon, the kind of simple moment I had forgotten how to appreciate during my first life.
“I’m trying to understand something about memory,” I said.
“Your memory?”
“Yeah.”
“What about it?”
I hesitated.
There was no way I could explain the real reason without telling her about my first life.
Instead, I gave her the truth I could safely share.
“I used to think that remembering something perfectly meant I couldn’t be wrong about it.”
Rosalie thought about that for a moment.
“But you can still remember something perfectly and understand it wrong, right?”
I looked at her.
“Exactly.”
She smiled.
“Then I guess you’re not as perfect as you think.”
I laughed.
“Thanks.”
“You’re welcome.”
She leaned slightly closer and looked at the notebook.
“But you don’t have to remember everything.”
“I know.”
“Do you?”
I didn’t answer immediately because I wasn’t sure.
Rosalie looked at me for a moment before continuing.
“Sometimes I forget little things all the time.
What someone said yesterday, where I put something, a song I heard a few days ago.”
“You forget songs?”
“Sometimes.”
“I don’t.”
“I know.” She laughed softly.
“You remember everything.
You did tell me.”
“Not everything.”
She gave me a skeptical look.
“Really?”
“Really.”
I thought about the engineer whose name I couldn’t remember.
Then I thought about Rosalie.
There were countless things about her that I remembered from my first life.
Her voice, her smile, the way she laughed when she was embarrassed, the expression she made when she was trying not to cry, and the way she used to tuck her hair behind her ear whenever she was nervous.
Those memories were still incredibly clear.
But there were small things I couldn’t recall.
What was the first snack she had ever bought me?
What was the first song she had sung in front of me?
What insignificant joke had made her laugh during some ordinary afternoon?
I didn’t know.
And for the first time, that didn’t feel like a failure of my memory.
It felt normal.
Human.
“I guess you’re right,” I said.
Rosalie smiled.
“Of course I am.”
“Don’t get used to hearing that.”
She laughed, and for a while we simply sat there talking about nothing particularly important.
Somehow, that made the moment important.
I realized I had spent too much time trying to preserve everything.
Maybe some memories mattered precisely because they weren’t records.
They were experiences.
They didn’t need to be perfectly catalogued.
They needed to be lived.
On the way home after dropping Rosalie off, I noticed something I might have overlooked before my regression.
A motorcycle passed me near the intersection.
Nothing about it seemed unusual.
There were dozens of motorcycles on the road every afternoon, and I continued walking without giving it much thought.
Several minutes later, however, I saw the same motorcycle again.
The rider wore the same dark helmet, and the vehicle had the same general appearance.
It passed at a distance before disappearing into the traffic.
I didn’t stop.
I didn’t turn around.
I simply remembered it.
Probably coincidence.
The following day, I saw the same older student I’d previously noticed talking with Dante.
He was standing near the school gate and wasn’t looking directly at me.
I continued walking until, for just a moment, our eyes met.
He looked away.
I didn’t react.
Instead, I stored the observation. Get faster updates on g.com.
Dante — recurring contact with older student.
Same individual previously observed.
Purpose unknown.
Possible connection.
No conclusion.
I almost smiled.
A few weeks ago, I might have immediately started constructing theories around it.
Now I knew better.
Observation wasn’t proof.
Patterns weren’t explanations.
And memory wasn’t knowledge.
I continued toward home.
For now, that was enough.
That evening, I returned to my laptop.
The small machine was hardly impressive by the standards of my first life, but it had already become one of the most useful tools I owned.
I opened the archive I had started building and created another section.
Current Timeline.
Unlike my memories, this section would contain only things I had personally confirmed in this life.
Events that had already happened.
People I had met.
Money I had received.
Businesses that were currently operating.
Technologies that currently existed.
Information I could verify.
I looked at the distinction for a long time.
First-Life Memory.
Current Reality.
Those two categories were becoming increasingly important.
The future I remembered was no longer a guaranteed sequence of events.
It was a collection of possibilities shaped by what I had experienced before, and every action I took could change the conditions that had produced those events.
That meant I needed something more reliable than memory.
I needed records.
I needed verification.
I needed systems.
The realization felt strangely familiar.
During my first life, engineering had taught me something important.
When a system became too complicated to manage mentally, you didn’t simply try to remember more.
You built tools.
You created measurements, recorded variables, established procedures, and reduced uncertainty.
I opened a new document and titled it Future Archive.
Then I created the same categories.
Confirmed.
Observed.
Secondhand.
Uncertain.
Unknown.
Underneath them, I added several more.
Current Status.
Dependencies.
Potential Variables.
Confidence.
I looked at the screen for a long time.
It wasn’t a perfect solution, but nothing was.
It was a beginning.
I saved the file and closed the laptop.
For a few seconds, I simply sat there and listened to the quiet hum of the machine.
I had spent my first life believing that remembering the future was the greatest advantage I could possibly have.
Now I understood something more important.
The future wasn’t a book I had already read.
It was a system.
And systems changed when their inputs changed.
I was one of those inputs now.
The next morning, I saw Dante across the schoolyard.
He was talking with two other students.
One of them glanced toward me, and Dante followed his gaze.
Our eyes met for a moment before he looked away.
I didn’t react.
I simply kept walking.
For the first time, I didn’t immediately wonder what Dante was planning.
Instead, I wondered what information he actually had.
There was a difference.
And now I was paying attention to it.
I had spent my first life trying to remember everything that mattered.
In this life, I would have to learn something harder.
I had to know what I didn’t know.