About the project

Facts have a history.

Not a Fact Anymore is a catalogue of claims that were once reasonably accepted as factual but were later overturned, replaced, narrowed, reclassified, or corrected by better evidence.

The purpose is not to ridicule earlier researchers or generations. Updating a conclusion when better evidence arrives is one of the healthiest features of science, scholarship, and empirical inquiry.

This project begins as a curated, open-source collection. Proposed entries and corrections are reviewed before publication, and every published entry links directly to its evidence.