Source policy
What we treat as evidence, what we do not, and why every citation carries the date we checked it.
Order of evidence
Sources are ranked by how close they sit to the original claim. Where a higher-ranked source exists, that is the one we use.
- Legislation — the text of the act, regulation or decree itself.
- Ministry — the department that administers the area.
- Statistical office — ČSÚ, Destatis, Eurostat.
- EU institution — the Commission, EUR-Lex, EU agencies.
- Regulator or supervisory authority.
- Public institution — ČSSZ, the Labour Office, health insurers.
- Documentation published by the organisation being written about.
- Peer-reviewed research.
- High-quality secondary reporting — as support only, never as the sole basis for a factual claim.
What is not a source
SEO blogs, aggregators, software vendors’ marketing pages, language-model answers and search snippets are not primary evidence. They may lead us to a source; they are not one.
Access dates
Every citation records the date we last opened the page and confirmed the claim on it. Official pages are rewritten and figures move; a citation without an access date cannot be audited a year later.
Rates, thresholds and effective dates
Legal and payroll figures are published with the date from which they apply. A rate without an effective date is unusable, because the reader has no way to tell which year it belongs to.
Nothing is invented
We do not publish sources, authors, quotations, statistics, studies, survey results, interviews or statutory provisions we have not verified. Where a claim cannot be evidenced, it is removed from the piece or the piece is not published.