Choosing sources
We seek sources close to the fact being checked. Manufacturer specifications and manuals can establish what a maker publishes about a named model, while public authorities can provide health, financial or travel guidance within a defined jurisdiction. The source, jurisdiction, model and version matter: a document for one region or product revision may not describe another.
Claims and evidence
A manufacturer’s statement about performance or health is a claim by that manufacturer, not independent proof. Our document reviews do not substitute for hands-on measurements or clinical evaluation. Where a claim exceeds what the available evidence supports, the article should say so and explain the practical uncertainty for the reader.
Dates and safety information
Published information can change. Articles should distinguish a source’s publication or update date from the date it was checked, when those details are known and relevant. Recall and safety checks have a defined scope and cannot establish that every notice has been found or that a product is certified safe.
Following and correcting sources
Links allow readers to examine the original material and check for newer instructions. External pages can move or change after publication. If a source is unavailable or a statement needs context, send the article and a reliable alternative through corrections. See the review policy for the overall product research method. When a document is no longer available, a current replacement should be checked for the same model and claim before it is treated as equivalent.