Evidentiality
How do we know this?
A grammatical or lexical distinction that marks the source of a speaker's information — whether directly observed, reported by another, inferred from evidence, or assumed.
- T1 · Documented
Attested in 5 languages: Tuyuca, Tariana, Turkish…
What linguistic research records.
- T2 · Interpreted
ordinary values usually retain only identity, value and type
How Lanskrit reads the code deficit.
- T3 · Proposed
typed value (Inferred<T>, Observed<T>, Reported<T>)
Speculative constructs — not executable code.
- T4 · Executed
Deterministic runtime available — Evidentiality Graft Lab.
Deterministic runtime — the graft as running machinery.
Open executable lab →
Each tier is a different kind of claim. We keep them visually distinct so a reader can never confuse a field record with a deterministic run.
Documented
What linguistic research records.
- origin of a claim
- directness of observation
- identity of a reporting source
- basis for inference
- degree of speaker commitment
Interpreted
How Lanskrit reads the code deficit.
- ordinary values usually retain only identity, value and type
- provenance is discarded or reduced to a free-text field
- systems cannot distinguish observation, report, inference and assumption structurally
Proposed
Speculative constructs — not executable code.
- typed value (Inferred<T>, Observed<T>, Reported<T>)
- annotation (@inferred, @observed)
- wrapper object (Evidence.inferred(...))
Executed
Deterministic runtime — the graft as running machinery.
- Runtimelanskrit-evidence-runtime-v0.1
- Fingerprintsha-256 · canonical form
- Receiptsreproducible on any machine
- provenance-aware values
- evidence types as part of a type system
- source-sensitive validation
- confidence propagation across expressions
- structural conflict detection between claims
- Not every language marks evidentiality grammatically; many express it through discourse or vocabulary.
- Evidentials describe the speaker's stance, not an objective measure of truth.
Conceptual syntax — not executable code
let risk: Inferred<Decimal> = infer(model_v3, tenant_history);- TuyucaSouth America · under review
Frequently cited example of an elaborated evidential system.
- TarianaSouth America · under review
- TurkishWestern Asia, Southeastern Europe · under review
- Quechuan varietiesSouth America · under review
- Japanese日本語East Asia · under review
Lexical evidentiality strategies rather than a full grammatical system.
Cited as examples of the feature, not as claims about all speakers of these languages.
Under review
Research source pending verification.
Central Phase 1 capability and the basis for the current interactive Graft Lab.
- Record version
- 0.2
- Last reviewed
- 2026-07-21
- Controversy level
- low
- COR-2026-00012026-07-22reclassification
Separated reliability and confidence from evidence kind; kind is now immutable once constructed.
Volume V white-paper alignment: evidence kind should describe how a claim was obtained, not how much we trust it.
cites lens.evidentiality.v1 v1.0.0
- COR-2026-00022026-07-22reclassification
`disputed` reclassified from an evidence kind to a typed relation between two claims.
Volume V: disagreement is a property of the graph, not of either claim in isolation.
cites lens.polyphonic-conflict.v1 v1.0.0