What explanation requires — and what it costs to abandon.

This is not an argument for a conclusion.
It is a clarification of what argument requires.

You may reject any conclusion that follows from explanatory sufficiency. You may reject explanatory sufficiency itself. Both are coherent philosophical choices. What matters is knowing precisely what each choice entails.

1. Two Modes of Logic

Not all logical inquiry operates at the same depth.

Partial logic applies rigorous standards within a domain while accepting certain terminals as given — not because they've been shown to be necessary, but because the inquiry doesn't require going further. Physical laws are taken as foundational. Constants are stipulated. Emergence thresholds are accepted without requiring an account of why those thresholds exist rather than others. Explanation proceeds with full rigor from these starting points. The starting points themselves are not in question.

This is not a deficiency. It is an appropriate scope constraint. Partial logic is the native mode of science, and rightly so. Science is not tasked with explaining why there is something rather than nothing, or why the rules are these rules. It is tasked with mapping what follows from them. Partial logic excels at this. It has produced everything we reliably know about how the physical world operates.

Complete logic extends the demand further. It asks not only what follows from a given structure, but why that structure rather than another — and ultimately, whether any feature of reality can be accepted as terminal without collapsing the intelligibility of the whole inquiry. Complete logic does not stop at what is merely convenient to assume. It stops only at what cannot coherently be denied.

The Canon operates in the mode of complete logic. This is not a criticism of partial logic. It is a scope declaration.

2. Explanatory Sufficiency Defined

Explanatory sufficiency is the governing principle of complete logic:

If a feature of reality is asserted as real, it is answerable to coherent explanation. Explanatory regress may terminate only at what cannot coherently be denied — not at what is merely convenient to assume.

This principle does not require that every explanation is currently known, that all explanations be mechanistic, or that inquiry never pauses for practical reasons. It requires only that explanation is not abandoned precisely where it becomes inconvenient.

3. Where Explanation May Stop

Legitimate stopping points

Explanation may terminate only at claims whose denial is structurally self-defeating — claims that cannot be coherently rejected without undermining the act of reasoning itself.

These are not brute facts accepted because further inquiry is inconvenient. They are conditions of intelligibility where the request for a deeper ground collapses before it begins:

— Denying reality presupposes reality as the context of denial.
— Denying logic employs logic in the denial.
— Denying the need for explanation requires offering reasons why explanation should not be required.

Note carefully: accepting these as terminal is not an instance of partial logic. Partial logic stops at what is given. These stop at what cannot be otherwise. That is a different logical category entirely. The demand for further explanation is not left unanswered here — it is structurally self-undermining.

Illegitimate stopping points

Explanation may not terminate at claims that could coherently be otherwise — particular physical laws, specific constants, emergence thresholds, unexplained correlations treated as foundational. These are the native stopping points of partial logic, and they are appropriate within that mode. Imported into a complete logic inquiry and treated as ultimate, they become explanatory abdication — the move of switching from complete to partial logic precisely where the pressure is highest.

4. The Asymmetry

In practice, explanatory demands are applied rigorously to physical systems, empirical regularities, and competing metaphysical frameworks. They are suspended — selectively — at consciousness, meaning, value, and lawhood itself.

This selective suspension is not neutral. It is partial logic operating inside what presents itself as a complete logic inquiry. The demand for rigor is extended to everything except the foundations of the position doing the demanding.

Explanatory sufficiency removes the option of strategic silence. It does not target any particular worldview. It simply requires that the mode of logic being employed be consistent — and declared.

5. The Cost of Opting Out

It is entirely legitimate to say:

I do not require ultimate explanations. I am comfortable with partial logic as my terminal framework. I do not believe complete logic inquiries are decidable or necessary.

This is not an error. It is a philosophical boundary choice, and a defensible one.

But it has consequences. If explanatory sufficiency is rejected:

— No metaphysical position can claim rational superiority over another at the level of foundations.
— Competing ontologies cannot be adjudicated by reason beyond local coherence.
— "Better explanation" loses meaning outside pragmatic or domain-specific success.
— Ultimate questions become matters of temperament, tradition, or utility — not truth.

Philosophical disagreement at the foundational level does not then continue. It dissolves into parallel assertion, with no shared standard by which either claim can be evaluated.

This is not a punishment. It is the logical outcome of operating in partial logic mode when the question being asked requires complete logic to answer.

6. The Rule of Engagement

Those working within complete logic commit to: following explanation wherever it leads, revising conclusions if deeper explanation demands it, and refusing brute stopping points except where denial is structurally self-defeating.

Those operating in partial logic are not wrong to do so. They have chosen a scope appropriate to their inquiry.

What is not coherent is to operate in partial logic mode while demanding complete logic authority — to accept arbitrary foundations for one's own position while requiring full explanatory grounding from competing positions. That move requires two incompatible standards running simultaneously.

Closing

This is not an attempt to force agreement.
It is an attempt to make the terms of disagreement explicit.

If you accept explanatory sufficiency, complete logic inquiry continues and the Canon has something to show you.

If you do not, partial logic remains available — rigorous, productive, and appropriate for the domains it governs.

The Canon does not require your agreement. It requires only that you know which mode you are in.