FactFusion AI publishes short facts, and each one links to the source it was checked against. This page explains how a fact gets onto the site, what the labels on a fact page mean, and how AI is used.
Where the facts come from
A fact starts with a source, not the other way round. We look for sources that publish the information first-hand and stand behind it, and we sort them into four tiers.
- Tier A: primary and official sources, such as government and intergovernmental science agencies, peer-reviewed research and official records.
- Tier B: established reference works and institutions, such as major museums and encyclopedias.
- Tier C: established news organisations and magazines.
- Tier D: blogs and social media. We avoid these.
The tier is shown as a badge next to the source on every fact page. We use Tier A or Tier B sources wherever they exist.
How a fact is checked
- The claim is written to say only what the source says. If the source gives a number as approximate, so do we.
- The claim, and every number and name in the explanation, is compared with the text of the source page.
- The editor approves the fact. Nothing is published without that approval, and its date is recorded as the fact’s “last verified” date.
- The fact page then shows the source link, the source tier, the last verified date, a confidence score and the name of the editor who verified it.
AI tools assist with the comparison in step 2 and with drafting. They do not replace step 3: the editor decides whether a fact is published.
What the confidence score means
The confidence score, from 0 to 100, is the editor’s judgement of how directly the source supports the claim. A fact stated outright by a primary source scores higher than one that rests on an estimate or a rounded figure. It is a judgement, not a calculation.
Keeping facts up to date
Sources change and knowledge moves on. When a fact is checked again, its last verified date is updated. If a fact can no longer be supported, it is corrected or removed.
Corrections
Every fact page has a “Report a problem with this fact” form. Reports go to the editor. If a report is right, the fact is corrected and its verification date is updated. If you would rather write to us directly, use the contact page.
How we use AI
FactFusion AI uses AI assistance for content organization, explanation drafting, and classification. All facts are verified by human editors before publishing.
- AI never supplies a fact, a source, a link, a date or an author. Facts come only from the linked sources.
- When an explanation was drafted with AI assistance, the fact page says so.
- The random fact generator does not use AI. It picks from the facts already published.
Editorial policy
- We state only what the source supports.
- We do not invent sources, authors, dates or quotations.
- We prefer primary sources and name every source we use.
- We correct mistakes openly and record when each fact was last verified.
- The site is free to read, and the fact widget and API are free to use.
The editor is Ali Ahmad Chaudhry. Read his profile.