Evidence rules

Read the evidence before deciding how much to trust

The same conclusion can change across regions and contexts. Evidence tiers keep single cases, marketing claims and outdated rules from becoming universal answers.

A

A: Authoritative basis

Laws, standards, official statistics, clinical guidance, peer-reviewed research or comparable high-quality sources.

  • Source, jurisdiction and update date are required.
  • High-risk topics should lead with A-tier evidence.
B

B: Verifiable calculation

Conclusions supported by public data, formulas, contract samples or cross-checked sources.

  • Show assumptions and calculation method.
  • Do not turn correlation into causation.
C

C: Observed case

Personal experience, a single case, community discussion or a small sample.

  • Useful for spotting a question, not proving a general rule.
  • Never the sole basis for health, legal or financial advice.

Source registry

A-tier evidence must leave a verifiable record

  • Official sourceOriginal link to law, standard, statistics or authoritative guidance.
  • JurisdictionState the country, region or sector where the claim applies.
  • Effective dateRecord the effective date and last verification date.

Production check

Every episode passes at least five checks

  1. 01Define the question

    Answer one decidable question.

  2. 02Break down cost

    List at least two hidden costs.

  3. 03Check the benefit

    Benefits must be observable and reviewable.

  4. 04Name the evidence

    State source, region, date and limits.

  5. 05Review risk

    No individual promises; no region-blind conclusions.