Three things get logged on this page.
- Factual fix. A claim we made was wrong. We change the piece and log the change here with the date and the source.
- Source replacement. An external link broke or moved. We replace with the current canonical and log it if the original carried meaningful weight (a citation, not a "see also" pointer).
- Substantive rewrite. We changed the piece's argument or recommendation in a way a returning reader should know about.
Typo fixes, copy edits, and rewrites that don't change the substance do not get logged.