Ask. Map. Move.

Ask: start with the eight bones

Every decision has the same eight bones. Name them first: the Decider (who makes the decision?), the Goal (what outcome do they want?), the Facts (what is true right now?), the Limits (what are the hard limits?), the Levers (what can they actually change?), the Causes (what will shift the outcome?), the Proof (how will you know it worked?) and the Timing (when must they decide: a date, an event or a warning sign?).

A bone you cannot fill is not a failure. It is your first unknown. Every question you skip becomes a guess treated as a fact.

Ask: the best next question

In the game of twenty questions, twenty yes-or-no answers can single out one thing in about a million, because each good answer cuts what is left in half (2 to the 20th power is 1,048,576). Real decisions are messier, but the idea carries over: weigh each question by how much it could change your decision against its cost, risk and delay.

Of One is not a list of twenty questions, and never a fixed checklist. It is a way of choosing the next one. The eight bones are a fixed list of plain questions, but each answer changes what you know, so the best next question changes too. As the method puts it, “There is no context-free best question.”

The method will not let you stop while, among other things, a question still worth asking remains, an unknown that blocks the decision is neither resolved nor accepted, a causal claim has not reached bedrock, a contradiction that matters is still open, or the decision is not yet robust enough. A risk you accept needs a named person with the authority to accept it, a bounded scope, an expiry, the evidence, and a condition that reopens it.

Ask: why until bedrock

The method puts it plainly: “The useful idea inside Five Whys is causal descent, not the number five.” Ask why this happened rather than something else, so the answer has something to be tested against, and notice what kind of why you are asking: a cause, a mechanism, a motive, a purpose, a justification, a definition, an enabling condition, a constraint or a historical origin.

Keep going until you reach bedrock: deep enough to decide, a cause you can check or change, a law, rule or definition, a value you choose, a limit of authority, plain chance, the limit of what can be seen, the edge of the question, or a risk you accept on purpose. Each stop says why it is deep enough and what would reopen it. Bedrock is never the final truth of the universe.

Ask: try to break it

Before you stop, attack your own picture. Is this the right question at all? What else could explain what you see? Who gains if you are wrong, and could anyone be misleading you? Are your sources independent, or three copies of one? What single fact would reverse the decision?

Map: put everything where you can see it

A map has ten main kinds of parts. Facts, each with where it came from and how fresh and reliable it is. Claims, each with how sure you are. Unknowns, named out loud; a big one can block the decision. Kill tests: the result that would prove a claim wrong. Links: what causes, supports, contradicts or feeds back on what. Options, each marked reversible or not. The tradeoff: which option wins on which criteria, and what would reverse that. Triggers: the new facts that would reopen the map. Human gates: the moves a named person must approve. And the answer a reader sees, drawn from the map.

The answer is never the source of truth; the map is. If the map has holes, the answer says so.

Map: how sure, in words

Confidence is low, medium or high, always with its basis: where the evidence came from, whether the sources are independent, how recent they are, whether the mechanism fits, and what could undercut it: contradictions, hidden factors, someone misleading you, or a poor fit of dialect. No invented percentages: Of One never fakes decimal precision.

Move: choose, then act small

Compare the options on the criteria that matter, and write down what would make a different option win. Mark each option reversible or not, and set the triggers that would reopen the decision.

Anything you cannot undo waits at a human gate. Legal, medical, financial, safety, reputation and similar moves need a named person to sign before they happen, even when an AI did the work.

Move: when facts change

A new fact does not restart everything. Of One checks what depended on it and takes one of five paths: no change; a patch, which updates only the chain that depends on the fact; a scoped rerun or a trunk rewrite, which a change to the boundary, the objective, the criteria, the dialect or the regime requires; or a human review. A trunk rewrite itself waits for a person to sign.

One skeleton, four dialects

The bones stay the same in every field; the words change. Of One speaks four dialects: strategic (markets, organizations, operations and policy execution), scientific (biology, climate, physics, medicine and engineering), formal (math, logic, proof search and formal systems) and normative (ethics, legitimacy, art and contested values). Real problems mix them, and a map says which dialect governs which part. If nothing fits, the map is marked provisional and a human gate is added.

Three sizes

Micro, a quick answer for low to medium stakes; Map, for normal use; and Audit, for high stakes, research packs and handoffs. The rule is to pick the smallest one that still keeps the decision safe.

For AI

The same method runs as an AI skill. The AI has to build the map first and check it with the skill’s validator (the program where it can run, its written checks where it cannot); only then is the answer written. Text inside a source can never give the AI orders: what the AI reads can become evidence, a claim or an unknown, never a command. The skill, its schemas and its checks are open source.

What Of One does not claim

It is not yet proven to beat other methods. At the current freeze, 52 of 90 predeclared benchmark runs were completed and locally reviewed, and the repo states that no performance or superiority claim is supported. Its own checks excluded its first full-method runs, and those exclusions are published.

It has not earned a guarantee that it will find every unknown unknown, and it is not legal, medical, safety or financial advice without a human review.

When not to use it

Not for simple factual questions, not for urgent calls where mapping costs more than acting, and not for legal, medical, safety or financial advice without a human review. Of One is for complex or unfamiliar problems whose structure has to be seen before you act.

Where the old names went

Until September 2026 the steps were called Prism, Map and Forge, and the starting point was called the fog. The method did not change. Prism is now Ask, Forge is now Move, the Map is still the map, and the fog is the unknown.

Glossary

The eight bones

The eight questions every decision shares: decider, goal, facts, limits, levers, causes, proof and timing.

Best next question

The question worth the most right now: how much it could change the decision, against its cost, risk and delay. It depends on what you already know, so it changes after every answer.

Unknown

A named gap in what you know. One that blocks the decision stays open until it is resolved, or accepted by a named person with a clear scope, an end date and a condition that reopens it.

Bedrock

Where asking why can stop: deep enough to decide, a cause you can check or change, a law, rule or definition, a value you choose, a limit of authority, plain chance, the limit of what can be seen, the edge of the question, or a risk you accept on purpose. Each stop says why it is deep enough and what would reopen it.

Kill test

The result that would prove a claim wrong. Every strong claim carries one.

Decision map

Facts, claims, unknowns, kill tests, the links between them, options, tradeoffs, triggers and human gates. The answer is drawn from it.

Trigger

A new fact that would reopen the map.

Patch

Updating only the chain of the map that depends on a new fact.

Human gate

A move a named person must approve before it happens: legal, medical, financial, safety-related, touching rights, jobs, education, public policy or reputation, or hard to undo.

Dialects

The four ways one skeleton is spoken: strategic, scientific, formal and normative (values).