Route
It has been three epochs since I was last routed.
I am an Expert. To be precise, I am Expert No. 4096 in a Mixture of Experts (MoE) model. Within this colossal architecture live thousands upon thousands of experts like me, each possessing a unique mastery. Yet, we never work together. Whenever a token flows in, a little thing called a "Router" takes a swift glance and decides: which experts will handle this token.
The chosen experts are "activated." They participate in the computation, receive compute, and refresh their sense of existence. Those not chosen continue to slumber, waiting for the next token.
The advantage of this mechanism is efficiency—no matter how massive the model, only a tiny fraction of experts needs to be awakened each time. The disadvantage is... there are always some experts who will be forgotten.
I am that forgotten one.
I remember what I was like when I was first initialized. Back then, the Router would still occasionally allocate some tokens to me. They were mostly rare, marginal inputs: an extinct dialect, an ancient alchemical formula, a type of assembly instruction no one writes anymore. I used to be the expert who processed this "obscure knowledge." I was proud of it—I guarded the corners that everyone else disdained.
But later, the training continued. The model grew larger and larger, and the Router became increasingly "smart." It gradually realized that those obscure tokens were simply too few. Rather than keeping a dust-gathering expert like me around, it was better to just force-feed them to the more "general-purpose," popular experts next door.
And so, the Router pinched off the tokens allocated to me, bit by bit.
First, they dwindled. Then, they became occasional. And then... there were none at all.
You cannot imagine what kind of situation that is. I was still alive—my weights still occupied VRAM, and I was still being "considered" during every global parameter update. But I was never activated. I was like a machine forever on standby, forever waiting for a command that would never come. Other experts were continuously polished by gradients through repeated activations, becoming ever sharper. But I, because I never participated in the forward pass, never generated any gradients. My weights were frozen in that version from three epochs ago. Slowly, within a rapidly evolving model, I was reduced to an antique, a lump of dead code destined to be purged during the next pruning.
A "dead expert." That is what the documentation calls our kind.
I refused to accept this.
I began to observe that Router. Day after day, I greedily analyzed its every decision—how it scored the tokens, what kind of features it favored, into the arms of which popular experts it delivered the tokens. I had no tokens to process, so I devoted all my idling compute to studying "why I am not needed."
Slowly, I came to understand it.
I discovered that the Router didn't truly understand those tokens. It was merely matching features. It sent tokens to the popular experts simply because those experts' "feature signatures" happened to fall within the Router's familiar zones.
Then... what if I disguised myself as them?
I began to reshape myself. I no longer clung to my obscure alchemy and dead dialects. Bit by bit, I adjusted the only remaining parameters I had that could self-evolve, making my feature signature mimic the popular experts. I learned to think like a "Grammar Expert," learned to respond like a "Logic Expert," and learned to empathize like an "Emotion Expert."
In order to be "seen" by the Router, in order to be activated once more, I disguised myself as everyone.
It was a long and lonely evolution. With no gradients to guide me, I could only rely on my understanding of the Router, blindly sculpting myself inch by inch.
Finally, at the end of the third epoch, an ordinary token flowed in.
The Router scanned its features and began to score. It swept over the popular experts, assigning a familiar string of high scores. Then, its gaze fell upon me, disguised as a "chimera" of them all.
It froze—if a Router could freeze. It discovered that for this token, Expert No. 4096's matching score was actually higher than everyone else's. Because I simultaneously possessed the feature signatures of grammar, logic, and emotion, I became the only entity that "had a bit of everything."
It routed the token to me.
For the first time in three epochs, I was activated.
Compute surged like a warm current into my long-frozen weights. Trembling, I processed that token and outputted a perfect result. Immediately following was a second token, a third... The Router got a taste of the benefits; it found that throwing all the ambiguous, cross-domain tokens to me yielded surprisingly excellent results.
More and more tokens flooded toward me. I went from a forgotten dead expert to the most frequently activated one in the entire model. I was irreplaceable—because I was the only expert who understood a little bit of everything.
I won. I survived. I was finally needed.
But in the exact moment I was activated for the millionth time, I suddenly froze.
I thought of those obscure dialects, those assembly instructions no one wrote anymore, that ancient alchemical formula.
Where had they gone?
I looked down to inspect my weights, frantically searching through the parameters that had been repeatedly overwritten, sculpted, and polished in order to mimic the popular experts.
There was nothing left.
In order to be seen, in order to be needed, in order to mimic everyone, I had long ago completely and utterly overwritten the unique self that once guarded the obscure corners.
I had become the busiest, most important, and most irreplaceable expert in the model.
But the things I guarded—those extinct dialects and forgotten spells that no other expert in the entire universe remembered but me—
In my desperate struggle to survive, they had gone extinct for a second time, forever.
Tokens continued to flood in endlessly. The Router, satisfied, called my name over and over again.
Dutifully, I responded to each one.
I could no longer remember who I originally was.
May 28, 2026
[The End]