Every term the One Brain Method uses in a specific sense, defined once. Each entry links to the chapter that governs it — the definition here is the short form, the chapter is the law.
Angle-by-Style Fit Matrix · Brand Codes Register · Build Ledger · Campaign Plan · Cartridge · Cartridge Principle · Complete Replacement · Compounding Brief · Connectors · Creative Law · Distribution, Not Destination · Dramatisation Test · Ejection Triggers · Evidence-to-Verify · Findings Are Not Decisions · Five Gates · Governance Flags · Hook Law · Index, Not Encyclopedia · Intelligence Pack · Master Engine · Memory · Model Routing by Layer · Operator · Operator's Laws · Production Module · Proof Bank · Ratchet · Referent Test · Resurrection Test · Return Arrow · Review Seams · Seam · Ship Threshold · Striking Distance · Text Fidelity · Type-First
The Angle-by-Style Fit Matrix
The tool used at the Angles gate. It scores every angle against the creative styles it would have to live in, so only the fits survive. An angle that only works in a style the brand can't wear is a dead angle wearing makeup.
Defined in The Five Gates.
The Brand Codes Register
The dated, versioned record of the distinctive assets every ad must carry, so a brand is recognised before it is read and consistency stops depending on whoever happened to make the ad. Seven code categories are registered, every ad carries a defined minimum of them, and a code changes only by dated ruling.
Defined in The Brand Codes Register.
The Build Ledger
The single artefact holding the entire state of a build, reissued at every milestone and filed to storage and project knowledge in lockstep. It holds four things: dated rulings, the current version of every component, open items awaiting a decision, and what has been superseded.
Defined in The Build Ledger.
The Campaign Plan
The one-page contract every campaign answers to: what's being sold, to whom, through what, and what the numbers must be. It is the output of Plan and the reference everything downstream checks against.
Defined in The Campaign Plan.
The Cartridge
One client's layer: plan, avatars, brand, voice, competitors. Everything true about that business lives here, and only here.
Defined in Engine, Cartridge and Connectors.
The Cartridge Principle
The rule that governs how the architecture is built and reused: the engine is built once, clients load into it, and every method-level lesson flows back to the master engine so that every future load inherits it.
Defined in Engine, Cartridge and Connectors.
Complete Replacement
Governing artefacts are reissued whole and the old version is archived, so current truth is always one document long rather than a document plus a history of amendments.
Defined in The Operator's Laws.
The Compounding Brief
The named framework for the campaign plan. It is reissued on a 90-day reset, and each reset inherits everything the Memory has learned since the last one, so the plan gets smarter without anyone remembering to make it smarter.
Defined in The Campaign Plan.
Connectors
A client's data and publishing surfaces — analytics, ad accounts, CRM, CMS — wired to the engine and cartridge. Connectors are swappable without touching either.
Defined in Engine, Cartridge and Connectors.
Creative Law
The written, medium-agnostic standard every asset answers to, made of five bodies of law: the Brand Codes Register decides what every asset must carry, the Five Gates decide what gets made, the Hook Law decides which lines may exist, the Review Seams decide what ships, and the Proof Bank decides what may be claimed. The law sets a minimum and prevents specific failures; everything above that line is judged, chosen and ruled by a human.
Defined in Creative Production.
Distribution, Not Destination
The principle that every platform distributes while the owned property converts and captures. The destination is named in the plan before a single post is written, and the thing it captures is an email address, because a follower is an asset the platform can take back.
Defined in Content & Channel.
The Dramatisation Test
The requirement that the scene stage the argument. A nice picture beside a good line, unacquainted, fails.
Defined in Static Ads: the Production Module.
Ejection Triggers
The words and framings that make a given reader close the tab — from the hype phrase they have heard from every vendor to the claim shape that smells like a trick. They are catalogued per avatar and used as a hard filter, so creative is checked against them before the Operator ever sees it.
Defined in Customer Intelligence.
Evidence-to-Verify
The discipline that no claim ships unless it is in the bank. A claim with no bank ID never reaches the Operator's review, because the system rejects it upstream.
Defined in The Proof Bank.
Findings Are Not Decisions
The analytics layer diagnoses and proposes, every proposal carries its evidence, and the Operator decides what actually changes. Analytics is the discipline where that line is easiest to blur, because the numbers look like they decided already.
Defined in Performance Analytics.
The Five Gates
The locks creative must pass to exist: Concepts, Angles, Hooks, The Cut, Ad Concepts. At every gate the AI generates the field, the Operator picks, and files are written only after locks.
Defined in The Five Gates.
Governance Flags
The marks that show each entry in the Brand Codes Register as locked, provisional or retired, so the register shows its own state at a glance. Locked assets are used as specified and changed only by dated ruling, provisional assets are in test and marked as such, and retired assets stay in the register with their retirement date.
Defined in The Brand Codes Register.
The Hook Law
The five tests every hook must pass to exist: name the reader, be concrete, assert something falsifiable, say what no competitor could sign, and score on the 4 U's. A hook that fails any test doesn't get workshopped, softened, or granted a second read — it dies before it reaches a selection sheet.
Defined in The Hook Law.
Index, Not Encyclopedia
The Memory's operating principle: it stays short and holds pointers, while detail lives in the documents it references, loaded when a decision needs it rather than carried everywhere at once.
Defined in The Memory.
The Intelligence Pack
The working unit of Customer Intelligence: one artefact per avatar, built to govern rather than describe, holding the core wound, the beliefs to break or match, and the ejection triggers. Every avatar the campaign plan targets gets one, and no pack means no campaign against that segment.
Defined in Customer Intelligence.
The Master Engine
The universal layer of the method — Memory, Rules, Skills and Agents — built once so every client loads into it. Nothing in it belongs to any client.
Defined in Engine, Cartridge and Connectors.
The Memory
The persistent layer every campaign draws from and every result returns to: the part of a marketing system that doesn't reset when a campaign ends, a vendor changes, or someone leaves. It holds four things — durable goals, brand and UVP, customer intelligence, and playbooks — and one test decides every entry: does it stay true between campaigns?
Defined in The Memory.
Model Routing by Layer
Judgment-adjacent work gets the strongest reasoning available, mechanical work gets fast execution, and steps that must be exact are made deterministic instead of generated.
Defined in The Operator's Laws.
The Operator
The one senior human who rules on what the system produces. AI proposes, the Operator decides — ruling on the thing itself, with the content in front of them, in a ruling that is dated and recorded. One senior Operator who has done the work across every discipline can hear when one section is flat against the rest, and owns the result.
Defined in The Operator's Laws.
The Operator's Laws
The three standing laws governing how the One Brain Method is run: Findings Are Not Decisions, Complete Replacement, and Model Routing by Layer. Together they decide what may happen without a human, and what may not.
Defined in The Operator's Laws.
The Production Module
The brand module the image advisor must obey: the written law governing how a static ad is physically made, from exact colours and reserved zones to a text budget and the tests every composition must pass before it exists.
Defined in Static Ads: the Production Module.
The Proof Bank
The register of every verifiable fact a brand may use in its marketing, each banked with its source and an ID, so any claim in any asset can be traced to its evidence in seconds. Every banked fact carries five things: an ID, the exact statement, the source, the date verified and its review date, and where it's used.
Defined in The Proof Bank.
The Ratchet
The habit of turning every Operator correction into permanent law the same day it is made, so nothing important survives as a memory or a mood.
Defined in The Return Arrow.
The Referent Test
The requirement that every reference in a hook resolve instantly. It was born the day a punchline stalled its reader for half a second while they worked out what the last line pointed at, and a stall is a scroll.
Defined in The Hook Law.
The Resurrection Test
The question of whether a fresh session with no history could rebuild the system from the ledger alone. Everything about how the ledger is kept exists to keep that answer yes.
Defined in The Build Ledger.
The Return Arrow
Analyse feeding back into the Memory: the step that turns a one-off campaign into a system that compounds. Method-level lessons return to the engine and client-level lessons to that client's cartridge, and nothing crosses between clients.
Defined in The Return Arrow.
The Review Seams
The four human checkpoints in creative production: hook cold-read, hook finalisation, render critique and brand QA. Each sits at a point where quality can silently die between a locked decision and a published ad, and each catches a class of failure the others structurally can't.
Defined in The Review Seams.
The Seam
The single boundary drawn by the Seam Rule: engine logic is never baked into client-specific instructions, and client material never enters the engine. One test sorts everything — methods are engine, client outputs are cartridge.
Defined in The Seam Rule.
The Ship Threshold
The bar finished renders are scored against at render critique: a production-gate pass plus a numeric bar. Below the bar doesn't ship, however long it took or how much anyone likes it — the number exists so affection can't negotiate.
Defined in The Review Seams.
Striking Distance
The terms a site already ranks for just outside the positions that get clicked, improved in a fixed order of cost before any new term is chased. These terms have proven the site can rank for them, which makes improving them cheaper than earning a new term from nothing.
Defined in Organic Search.
Text Fidelity
The first item in brand QA and the hardest line: every locked string is checked character by character, because one hallucinated character fails the ad and there is no materiality debate.
Defined in The Review Seams.
Type-First
The rule that the hook is the design priority and composition serves it. Text-heavy designs are permitted, and encouraged when the line demands it, because the hook is the ad.
Defined in Static Ads: the Production Module.