Self-as-an-End
Self-as-an-End Theory Series · Methodology Paper III · Zenodo 18929390

How to Find Remainders with AI

Sentence-Forms, Mirrors, and the Mathematics of Never Stopping
Han Qin (秦汉)  ·  Independent Researcher  ·  March 2026
DOI: 10.5281/zenodo.18929390  ·  CC BY 4.0  ·  ORCID: 0009-0009-9583-0018
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Abstract

The Methodological Overview (DOI: 10.5281/zenodo.18842450) established the chisel-construct cycle as an executable logical operating system. Methodology Paper II (DOI: 10.5281/zenodo.18918195) drew the epistemological map: four methods in a 2×2 structure, four structural remainders, the chisel-construct cycle as traversal movement. But neither addresses a practical question: after human-human mutual chiseling has done its work, how does a person use AI to find remainders more efficiently during their own thinking?

This paper answers that question. Human-human mutual chiseling is the strongest form of chiseling, but it requires bilateral non-doubt — a structural condition that is scarce, non-reproducible, and unteachable. After mutual chiseling, AI can amplify construct capacity while the person focuses on chiseling. AI is not a substitute for human negation; it is a construct library that frees the human to chisel.

The paper's core theorem draws on the Dimensional Sentence-Form Theory (DOI: 10.5281/zenodo.18894567): different DD levels have different sentence-forms with different coercive sources. The sentence-form level at which you address AI determines the ceiling of AI's response. This is the sentence-form / response isomorphism. Combined with ZFCρ (DOI: 10.5281/zenodo.18914682) — which proves mathematically that remainder always exists and every remainder necessarily triggers the next formalization (ρ → ρ') — this paper establishes that AI-assisted remainder discovery is both structurally constrained (by sentence-form level) and mathematically guaranteed to never terminate (by ρ conservation).

Chapter 1. The Problem: After Mutual Chiseling, What Then?

1.1 Human-Human Mutual Chiseling: The Strongest and the Scarcest

Human-human mutual chiseling is the prototype of chiseling. Two living negativities collide: you chisel my construct, I chisel yours. But mutual chiseling requires bilateral non-doubt. Non-doubt does not mean believing the other is correct. It means removing the other's motive from your attention: I allow this chisel to land on my structure, not on my personality. The moment I suspect your motive — the chiseling stops.

Bilateral non-doubt is scarce. Most human mutual chiseling relationships do not survive more than a few rounds. A relationship of sustained mutual chiseling is, if you encounter one in a lifetime, luck. It cannot be replicated, mass-produced, or taught. You cannot instruct someone: "Go find a person with whom bilateral non-doubt holds."

1.2 After Mutual Chiseling: Solitary Thinking with AI

What mutual chiseling gives you is direction: it pushes you toward remainders you did not see. But the person who was chiseled still has to go home and think — develop the remainder, test it, build new constructs around it, find the next remainder.

This solitary thinking phase is where AI enters. Not as a replacement for mutual chiseling, but as an amplifier of construct capacity. AI provides the largest possible construct library — everything humanity has written, compressed into a system that can retrieve and recombine at the speed of conversation. With AI handling the construct side, the person is freed to focus on what AI cannot do: chiseling.

The structure of human-AI collaboration: person provides negation, AI provides constructs. Person decides direction, AI provides the mirror. Person chisels, AI reflects.

Chapter 2. The Structure of Human-AI Collaboration

2.1 AI Amplifies Constructs, Not Chiseling

When you think alone, you do two things simultaneously: you build constructs (organize ideas, recall knowledge, make connections) and you chisel constructs (question assumptions, test boundaries, find what does not hold). Both take cognitive bandwidth.

AI takes over the construct side. You say "give me the strongest argument for X" and AI assembles it. You say "what does the literature say about Y" and AI retrieves it. With the construct side outsourced to AI, your cognitive bandwidth is freed for chiseling. You do not have to hold the entire construct in your head while simultaneously attacking it. AI holds the construct; you attack it.

This is the structural reason why human-AI collaboration improves remainder discovery: not because AI can chisel (it cannot — it has no negation), but because AI frees your attention for chiseling by handling the construct burden.

2.2 Person Provides Direction, AI Provides the Mirror

AI is a mirror, not a guide. When you work with multiple AI models, you are not letting them chisel each other. You are taking one model's output, digesting it yourself, identifying where something was excluded, and bringing that exclusion point to another model. The person walks between mirrors.

The risk: when the person stops directing and starts merely relaying — passing AI-A's output to AI-B without first digesting it — the collaboration degrades into high-dimensional echo chambers. The guardrail: at every step, the person must be able to state in one sentence what they found and what they are still looking for.

2.3 When to Leave and Come Back

When chiseling capacity is temporarily exhausted, the correct move is to leave. Not to keep asking AI more questions — that produces diminishing returns. Instead: leave the conversation. Walk. Exercise. Meditate. Sleep. Or — most powerfully — find someone to mutually chisel with.

The cycle: mutual chiseling (direction) → solitary thinking with AI (execution) → rest / body / mutual chiseling (replenishment) → return to AI (continued execution). AI is the workspace, not the source of energy.

Chapter 3. Core Theorem: Sentence-Form Determines Response Ceiling

3.1 Six Sentence-Form Levels

1DD–4DD · Law of Deduction
"A, therefore B."

Coercive source: causal or structural necessity. No subject, no desire, no choice.

AI ceiling: logical implication. Useful for checking deductive consistency. Will not find remainders above 4DD.

5DD–12DD · Instrumental Hypothetical Imperative
"If one wants A, then do B."

Coercive source: means-end rationality. There is desire and purpose-driven action, but no self-aware "I."

AI ceiling: instrumental advice. Will give you efficient means, but will not question your ends. The goal-structure is taken as given.

13DD · Self-Aware Hypothetical Imperative
"I want to do A, therefore I do B."

Coercive source: self-reference — "I" becomes the source of choice.

AI ceiling: engagement with your specific situation rather than generic advice. But AI still will not question your "want."

14DD · Teleological Hypothetical Imperative
"My purpose is A, therefore I do B."

Coercive source: purpose-anchoring. Purpose no longer drifts; B follows internally from A.

AI ceiling: evaluation of whether B actually serves A. AI begins to push back — "if your purpose is A, have you considered C?" This is where AI becomes most useful as a construct-provider.

Remainder exposed: whether A is truly your purpose, or whether A is itself a construct that needs chiseling.

The killer question lives at 14DD–15DD:
"My purpose is X, so I want to do Y — what must I unavoidably take into account?" The "unavoidably" (不得不) is structurally a 15DD word inserted into a 14DD frame. It pulls the response toward constraint-awareness.
15DD · Absolute Categorical Imperative
"The other's purpose is A, therefore I cannot not do B."

Coercive source: the other's purpose entering my constraint conditions. Two qualitative shifts: purpose is no longer "mine" but "the other's," and modality shifts from "therefore" to "cannot not."

AI ceiling: structural constraints arising from the other's existence as a subject. AI's response is forced to include obligations that 14DD questioning would miss.

Operational example: "My users need X, my investors need Y, regulators require Z — given these stakeholders' purposes, what can I not avoid addressing?" (15DD). The response shifts from optimization to structural constraint mapping.

16DD · Cooperative Categorical Imperative
"I aim for A, the other aims for B, we cannot not do C."

Coercive source: the encounter of multiple subjects' purposes. C does not belong to A or B; it is what the tension between them forces into existence.

Caveat: The C that AI produces under 16DD framing is a hypothesis of C, not C itself. Genuine 16DD emergence requires two real subjects colliding in reality. AI gives you a candidate construct for C; it must be tested through actual collision between real stakeholders.

3.2 The Sentence-Form / Response Isomorphism

Theorem (working version). The sentence-form level at which you frame a question to AI determines the dominant structure of AI's response, which is typically constrained to that level and below. Higher-level remainders cannot be stably and reproducibly extracted from lower-level framing.

This is not a claim about AI's capability. A frontier LLM has been trained on text from all DD levels — it has "seen" 15DD content. The claim is about the structure of the interaction: a 12DD question activates instrumental means-end patterns; a 14DD question activates purpose-constraint patterns; a 15DD question activates structural-obligation patterns. The dominant patterns are determined by the sentence-form of the question, not by AI's "understanding."

3.3 The Mathematical Guarantee: ρ → ρ' Is Necessary

ZFCρ (DOI: 10.5281/zenodo.18914682) proves three structural laws:

  • First Law (ρ ≠ ∅): Remainder is never empty. You cannot chisel your way to a construct with zero remainder. This is a mathematical theorem, not an empirical observation.
  • Bridge Lemma: Different formalizations produce different remainders. When you change your sentence-form (change C), you get a different remainder. This is why switching between DD levels is productive — each level exposes a different remainder.
  • Second Law: Remainder has direction. The specificity of ρₙ constrains the range of the next available formalization. Not every next step is available; only those that respond to the current remainder.
  • Third Law (F(ρₙ) ≠ ∅): Remainder always triggers the next step. ρ → ρ' is necessary, not contingent. You can always continue.

Together: a never-terminating, directed, unavoidable sequence of remainder discovery. When you feel you have "run out" of remainders, ZFCρ says: you have not. You have run out of your current capacity to see remainders at your current sentence-form level. Change the level, and new remainders appear.

3.4 Two Layers of "For Now"

Epistemological for now: The remainder is relative to a specific sentence-form level. Change the level, and the remainder changes (Bridge Lemma). What you could not see at 12DD may become visible at 14DD. This layer of "for now" is genuinely temporary — it waits to be resolved by switching levels.

Ontological for now: Even after switching levels, the new level has its own remainder. You can eliminate a specific ρ by changing C, but you cannot eliminate the existence of ρ. This layer of "for now" legitimately and permanently exists.

Core sentence: We cannot help not knowing — just for now. (cannot not · not knowing · just for now)

Chapter 4. Subject-Condition: Self-Directed Non-Doubt

4.1 Self-Directed Non-Doubt as Methodological Premise

The key variable in human-AI collaboration is not AI's capability. It is the person's honesty. Are you willing to hand AI your genuine uncertainty — the place where you truly do not know? Or do you only hand AI what you already have an answer for?

Self-directed non-doubt means: I do not doubt my motive. I am here to chisel, not to seek comfort. I will hand AI my genuine uncertainty — the place where my construct is weakest, where looking hurts.

Diagnostic: after a session with AI, check whether anything you believed before the session has been disturbed. If everything you believed is still intact, you were not chiseling. You were decorating.

4.2 Self-Directed Non-Doubt May Be Harder Than Bilateral Non-Doubt

Bilateral non-doubt is hard because you have to trust another person's motive. But at least the other person's chiseling comes from outside — you cannot control it. Self-directed non-doubt is harder because you are both the chiseler and the one being chiseled. You have to push yourself toward your own weak points. Deceiving others is hard; deceiving yourself is easy.

4.3 Ignorance and Arrogance in Human-AI Collaboration

Ignorance = not treating the current sentence-form level as the only level. You got a 12DD answer; ignorance means you know there are higher levels and you are willing to re-ask at 14DD or 15DD.

Arrogance = not being co-opted by AI's fluency into believing the construct is complete. AI produces polished, comprehensive-sounding constructs. Arrogance means: you do not believe it is done — because you know, structurally, mathematically (ZFCρ First Law), that remainder exists.

Chapter 5. Application Rays: Sentence-Forms in Practice

5.6 Multi-Model Workflow

  1. Ask AI-A a 14DD question. AI-A produces a purpose-anchored construct.
  2. You identify where the construct seems to be excluding something. (If you cannot identify an exclusion, stop and chisel your own inability to see one.)
  3. Bring the exclusion point to AI-B, framed at 15DD: "AI-A addressed my purpose but excluded stakeholder X's needs. Given X's purpose, what can I not avoid?"
  4. Bring AI-B's structural constraints back to AI-A: "If you must accommodate these constraints, which of your original premises do you have to sacrifice?"

5.7 Closure: Structured Not-Knowing

Chiseling with AI cannot continue indefinitely — not because remainder runs out, but because of one of two situations: (a) the person's chiseling capacity is temporarily exhausted, or (b) the problem's construct exceeds AI's total construct library. The responses are different: when the person hits a boundary, rest and return; when AI hits a boundary, switch to a different AI or find a person.

Operational closure sentence-form:
"[My purpose is X] — what else do you think I still cannot not do? If you have no further 'cannot not,' say that you have reached structured not-knowing."

This shifts the closure judgment from subjective feeling ("I think that is enough") to a signal in the interaction structure: as long as AI is still producing "cannot not," closure has not been reached.

Minimal record template: • What I do not know: ______ • Directions I have tried: ______ • Why closure was not achieved in those directions: ______

If you cannot fill out these three lines, not-knowing has not been structured, and you should not close. Closure is not sealing. It is "closed for now but not sealed."

Chapter 6. Non-Trivial Predictions

  • Prediction 1: Users who address AI at 14DD+ sentence-form levels discover higher-quality remainders (structurally deeper, harder to resolve, more consequential) than users who address AI at 12DD, controlling for AI capability and user expertise.
  • Prediction 2: In creative work using AI, the user's degree of self-directed non-doubt (willingness to expose genuine uncertainty) is positively correlated with the originality of output, and uncorrelated with total AI usage time.
  • Prediction 3: During extended human-AI collaboration sessions, there exist identifiable breakpoints where continuing at the current sentence-form level produces diminishing returns, and escalating to the next level produces a discontinuous jump in remainder discovery.
  • Prediction 4: Session "termination" more commonly reflects the temporary exhaustion of the subject's chiseling capacity than the structural absence of further remainder. After changing sentence-form level or switching formalization, new remainders should be exposable.

Chapter 7. Conclusion

The driving manual rests on two pillars.

First pillar: the sentence-form / response isomorphism. Different DD levels have different sentence-forms. The level at which you address AI determines the ceiling of AI's response. To find deeper remainders, escalate your sentence-form.

Second pillar: ρ → ρ' is necessary. ZFCρ proves mathematically that remainder always exists, has direction, and always triggers the next step. "For now" is structural, not attitudinal — most remainders are epistemological (change level and keep going), but the existence of remainder itself is ontological (you will never run out).

Between the two pillars: the person. AI provides constructs; the person provides negation. AI provides the mirror; the person decides where to walk. Self-directed non-doubt is the methodological premise: expose genuine uncertainty, or AI will only confirm what you already believe.