Reliability is the product. Every published fact carries a citable source, and sources are ranked by reliability. Time-sensitive claims are dated, because policy on this topic changes quickly.
Source reliability tiers
| Tier | What it is | Examples |
|---|---|---|
| Tier 1 — Primary / authoritative | Government and official records; company primary sources. | CBSA notices, EU regulations, USTR determinations, company filings |
| Tier 2 — Reputable secondary | Established media and trade press, ideally citing Tier 1. | NPR, CNBC, Electrek |
| Tier 3 — Non-reliable | Social media and forums. Not used in v1; if used later, always flagged. | Reddit, X |
Rules we follow
- No published claim without a citable source.
- Prefer the most primary source available (cite the regulation, not the article about it).
- Use absolute dates and an as-of date on time-sensitive facts.
- Separate fact from opinion — data pages stay neutral; opinion is labelled.
- When sources conflict, show the disagreement rather than picking silently.
- Items not yet confirmed against a primary source are labelled 'pending primary-source confirmation'.