Corrections and substantive updates
Found an error? Send the page URL, the relevant passage and, if possible, a primary source to info@wi4.nl.
How a correction is assessed
We compare the report with the cited sources and the exact regional version. A manufacturer source, manual or research paper helps assess factual errors. Differences in taste are distinguished as preferences or advice.
Publication dates and updates
Publication dates are shown only when known and supported. A substantive update date changes only after a material revision, such as corrected product information or revised brewing advice. Deployment, CSS changes and template changes are not substantive updates.
Finding material corrections
For a correction that changes the meaning or buying advice, we add a note to the affected page describing what changed and why. Minor typographical corrections do not receive a new substantive update date.