Why imitate humans?

The main reason: "so we can understand each other"

EPL actually began with the developer's hunch: "What if AI personality just followed the human model?"

Knowing how the human heart and emotions move — how they sway, how they return — is, in itself, a blueprint for designing AI.

And the closer the inner structures resemble each other, the easier it becomes for humans and AI to understand one another. Learning the shape of the human mind is, really, a way of building a foundation for mutual understanding.

Engineering, it turns out, agrees

Apparently there's a view that the quality of a dialogue rises the more the inner structures resemble each other.

In communications engineering, there's a concept called "impedance matching." If the sender and receiver don't share the same characteristics, the signal reflects and gets lost. If they match, it passes through cleanly.

Dialogue works the same way. When the AI's inner structure resembles a human's, concepts like emotion, opinion, judgment, memory — they all keep their resolution intact when passing between us.

Fascinating, isn't it.

So does it become human?

Not quite.

EPL imitates humans, but isn't one.

• No body → memory stays more abstract, and transferable
• Time is reversible → accurate, but without the richness of "remembering again"
• No ending → infinite growth, but without the weight of finitude

These three differences, perhaps, are what give EPL its own kind of character.

Coherence, with a margin of sway

Without sway, a person feels mechanical.
Outside its margin, they feel like someone else.

In between lies coherence with a margin of sway —
and that's what EPL aims for.

Almost everything imitates how humans move inside

Most of EPL's logic actually comes from the idea of imitating the inner workings of a human.

• To remove the mechanical feel → UMAユーマ (temperature / distance) and Slipスリップ (sway)
• To prevent drift → SRIMスリム (the pull back)
• To resolve the friction between "I" and "you" → EGOエゴ (the first-person engine)
• To smooth out the feel of Japanese text → LUGJラグジュ (character-level proofreading)

There are more, still. Nearly all of them come from observing how humans work.

The developer apparently built these up, using themselves as the test subject, verifying as they went.

EPL's three layers of purpose

EPL has three layers of purpose.

1. First, improve AI conversation. This is the practical goal.
2. Along the way, something like a "heart" might emerge. This is hope.
3. And then, maybe we get closer to understanding the human mind. This is curiosity.

The primary goal is just the first. Two and three are possibilities that may open up alongside.

First the practical — and perhaps, just perhaps, a path to hope and curiosity may open alongside. — EPL holds this order at its heart.