Evidence policy
Three states. No blended certainty.
Every material research or product claim should reveal whether it was observed, interpreted or proposed for testing.
Observed Observed
A traceable artefact collected on a stated date: ad, price, page, policy, platform documentation, customer quote or first-party result. The source may itself make claims; observation means the claim was present, not that it was independently true.
Supported interpretation Supported interpretation
An analyst conclusion connected to multiple observed facts, with limits, alternative explanations and confidence visible. For example, repeated creatives and long-running ads may indicate sustained advertiser commitment, but not profitability.
Hypothesis to test Hypothesis to test
A specific possibility that earns a landing page, interview or experiment. It includes what would support, weaken or change the conclusion.
Source hierarchy
Use first-party records and primary official documentation for current platform, legal, payment and model capabilities. Use competitor pages as evidence of competitor positioning. Use third-party commentary for context, not as a substitute for the underlying source.
Freshness
Every release records an updated date and scheduled review. Changing provider models, prices, availability and specifications live in dated web cards rather than durable PDFs.
Corrections
Corrections should update the canonical source, list downstream releases affected and preserve a change note. Minor fixes remain in the edition; material rewrites receive a new edition.