Businesses are simultaneously perception systems and specification systems. We publish open-source research frameworks for both sides.

Spectral Brand Theory (SBT) models how brands are perceived — eight perceptual dimensions, observer-specific spectral profiles, math-hardened validation, an AI-native analytical pipeline. Organizational Schema Theory (OST) models how businesses are specified — a reverse-design TDD methodology where customer-experience goals are acceptance tests and each operational layer validates the layer above it.

Aaker drew the map. SBT built the microscope. OrgSchema built the specification. Neither alone is complete.

Everything is open: ~40 working papers on Zenodo (CC BY 4.0), machine-readable sources on GitHub, runnable toolkits.

Pick the row that fits you. Each path names the exact repo/paper to open first.

A think-tank bundles two things: the people who think, and the knowledge they think with — the tank. This corpus unbundles them. The published frameworks are the tank — a calibrated, versioned body of knowledge, method, and runnable instruments. You bring the think — your own AI — and your data stays with you.

• The lens (ours, open) — the papers, each repo's paper.yaml/ONTOLOGY.yaml substrate, and the instruments (the Brand Spectrometer, the OrgSchema validator).
• The intellect (yours) — any AI, local or cloud, pointed at the lens.
• Your case (yours, private) — your question and your data; never uploaded here.

Point your agent at the relevant reading path (or a repo's AGENTS.md), give it your case, and it reasons through the lens — and, like the instruments, tells you what it cannot resolve instead of inventing an answer. It diagnoses and analyzes; you decide and act. Measurement, not management.

Spectral Brand Theory. A brand emits signals across eight independent perceptual dimensions — Semiotic, Narrative, Ideological, Experiential, Social, Economic, Cultural, Temporal. Each observer filters those signals through a personal spectral profile (a weight vector) and constructs a perception cloud — a probability distribution over possible convictions, not a single "brand image." Observers group into cohorts (perceptual, not demographic). Two different emission profiles can produce the same perception for a cohort — metamerism. Measurement, not management: SBT measures the perception you do not control.

Organizational Schema Theory. A business is a specification cascade across six tiers: customer-experience goals at the top are acceptance tests; each lower layer (positioning → capabilities → processes → roles → sourcing) must validate the layer above. Verification is an operator that projects the sprawling implementation back onto the specified subspace. Distinct configurations that yield equivalent outputs are organizational metamerism. Specification, not improvisation: OST makes the business you do control explicit and testable.

The bridge. Both are instances of the rendering problem: a compact specification (genome / org-schema / brand guidelines) is rendered into a vast implementation (organism / operations / signals), from which an emergent layer arises (phenotype / culture / perception). The meaningfulness program generalizes this to any knowledge artifact: a small substrate (the claims) renders into much larger prose.

            SPECIFICATION  ──render──▶  IMPLEMENTATION  ──emerge──▶  EMERGENT LAYER
  biology    genome                     organism                     phenotype
  business   org-schema (OST)           operations                   culture
  brand      guidelines                 emitted signals              perception cloud (SBT)
  research   substrate / spine          prose                        meaningfulness

Per-term definitions and their formal relations live in each paper's ONTOLOGY.yaml + GLOSSARY.md.

spectralbranding.com · Substack · Zenodo

orgschema.com · Substack · Zenodo

Meta-corpus on knowledge work in the post-AI era — the substrate↔rendering distinction operationalized for any propositional artifact (paper, memo, brand spec, decision log).

Understand SBT (brand perception):

1. The framework — spectral-brand-theory (2026a): the 8 dimensions, emission profiles, perception clouds, cohorts.
2. Where it sits — r0-literature-survey (2026c): SBT vs Aaker / Keller / Kapferer / MDS. And spectral-identity (2026n): formalizing Aaker's identity model.
3. Why eight — r11-dimension-justification (2026r).
4. Mathematical spine — r1-formal-metric (geometry) → r2-spectral-metamerism (projection bounds) → r3-cohort-boundaries (concentration of measure) → r4-sphere-packing (market capacity) → r5-specification-impossibility.
5. Dynamics — r6-diffusion-dynamics, r9-nonergodic-perception, r12-coherence-resilience, r18-spectral-dynamics, r22-spectral-gap-restoration.
6. AI era — r15-ai-search-metamerism, r16-ai-native-brand-identity, r21-spectral-immunity, r19-rate-distortion.
7. Measure it — prism-instrument (2026as) and the Brand Spectrometer (2026ax — the applied instrument built on PRISM: a reproducible pipeline that reads cohort-resolved 8-dimension perception from public artifacts under ground-truth-absence, with operator/artifact noise floors), and the applied cases r10-dove-case-study, r17-brand-triangulation.
8. When the score suffices — brand-correspondence-principle (2026au): the regime where an aggregate brand score is sufficient for a decision, and the measurable cost when it is not.
9. Reach a perceptual cohort — reaching-a-perception (2026av): a perceptual cohort has no native media address and does not need one — three measurable bridges from perception to delivery (broadcast a dimension and let self-selection route it, follow atom provenance, or quantify the proxy-join loss), and why the address-free route is the post-cookie tailwind.

Understand OST (how businesses are specified):

1. Six tiers — six-tier-ontology (2026ag) + the OST main paper.
2. The rendering problem — the cross-domain bridge (biology / org / brand).
3. Mechanics — verification-as-operator (2026ae), projection-paper (2026m), org-as-metadata (2026af, organizational metamerism).
4. Where to invest — tier-allocation (2026aj), tier-rotation (2026ai), brand-as-modular-layer (2026ah), capability-as-projection (2026al).
5. Readiness — specification-readiness (2026am) + its empirical companion (2026an); diagnose with orgschema-audit (2026ar).

Understand the meta-program (research after AI): meaning-meaningfulness (2026ao/2026ap) · r14-paper-as-repository (2026u) · canon-as-repository (2026w) · paper-spec · paper-repo.

A concrete four-step recipe, using both frameworks:

1. Place your business on the six tiers (OST) — use orgschema-toolkit; see orgschema-demo for a worked example. Output: an explicit, testable spec with the acceptance tests that define "working."
2. Measure your brand's 8-dimension emission profile and the cohorts that matter (SBT) — run sbt-framework; compare against the 26 specs in brand-functions.
3. Find the two gaps — the specification gap (operations exceed or miss the spec → OST verification-as-operator, orgschema-audit) and the perception gap (the cohorts' perception clouds diverge from intent → SBT r10-dove-case-study, r12-coherence-resilience).
4. Decide where capital/attention creates the most value — tier-allocation (2026aj, "where to invest within the firm"), tier-rotation (2026ai), and the AI-substrate-dependence lens for new bets. For brand-portfolio moves: r8 → r21-spectral-immunity (when portfolio interference does and does not hold), brand-as-modular-layer (2026ah).

CMO-first? Skip to steps 2–3. CFO-first? Steps 1 and 4. The point: you can only manage the specification you control once you can measure the perception you don't.

• Every paper folder has an AGENTS.md — a file-by-file guide. Read it first.
• Citations are [@citation_key] keys, resolved against the bundled <key>.bib. A [@key] is never a typo — it renders to "(Author Year)". See each folder's CITATIONS.md.
• Structured claims (what a paper asserts, assumes, and depends on) are in paper.yaml (Paper Spec) — parse this instead of the prose.
• Terms are defined in GLOSSARY.md with formal relations in ONTOLOGY.yaml (owns / imports / refines).
• To answer a grounded question: find the paper in the reading paths above → open paper.md → resolve cites against the .bib.

When to measure a brand, use the Brand Spectrometer — not the papers. If the task is to obtain cohort-resolved, 8-dimension brand perception from real public evidence, or to test whether two audiences genuinely differ, route to the Brand Spectrometer: live tool meter.spectralbranding.com, code brand-spectrometer, methods paper 2026ax.

• Use it for measurement questions — "what does this brand's perception cloud look like?", "do these two cohorts read the brand differently?", "which dimension separates them?"
• How it works (so an agent knows what it returns): dated public artifacts → reflections (per-artifact 8-D readings) → cohort vectors with self-computed operator and source noise floors; it declares a cohort difference resolved only when the signal-to-noise clears the floor (triangulated), and otherwise reports sub-resolution — never "no difference," never a finding.
• Do not use it as a single-number brand tracker, and note it measures cohorts, never individuals (no person is identified or stored).
• Pair with the papers: for the theory of what it measures, read SBT (2026a); for whether one score is enough and how to act, read 2026au; for reaching a measured cohort, 2026av. The emission unit is a signal; the Spectrometer's measurement unit is a reflection — distinct concepts (see sbt-framework/docs/GLOSSARY.md, Measurement layer).

• License: papers CC BY 4.0; code MIT (dual-licensed per repo).
• Cite: each paper folder has a CITATION.cff and a Zenodo DOI.
• Author: Dmitry Zharnikov — ResearchGate · Zenodo (SBT) · Zenodo (OST)