Source hierarchy
We prefer primary research and authoritative sources for scientific context and current merchant pages for unstable product facts such as price and included materials.
Merchant claims
Statements made by a seller are attributed to the seller. They are not presented as independent findings.
Updates
Commercial terms can change. Dated checks are included where appropriate and should be reverified periodically.
Corrections
When a material factual error is identified, we aim to correct the affected page rather than preserve outdated copy.