Useful guidance has to change when the evidence changes.

How to report a problem

Use the contact page. Include the article URL, the sentence or section at issue, the reason it may be wrong, and a primary source when one is available. Disagreement alone is not dismissed; it helps us identify where fact, inference, and opinion were not separated clearly.

How we respond

• Small spelling or formatting repairs may be made without a correction note.
• Material factual or interpretive changes update the article date and add a clear note.
• A withdrawn recommendation remains visible when readers need to understand why it changed.
• Commercial relationships do not prevent a correction or removal.

Current correction record

No material corrections have been recorded for the current publication set.