Standards
Corrections
Short videos are a bad format for admitting error: a clip that has been reposted cannot be edited, and the version circulating is the version people see. So the rule here is that the page is the record. If a figure changes, this page says so and the video’s own page carries the note.
What counts as a correction
A wrong number, a misattributed source, a period that does not match the data, or a chart whose encoding misrepresents its own figures. All four get the same treatment: the clip is re-rendered, the page notes what changed, and the change is logged below.
Not every change is a correction. Fixing a typo in a caption, re-rendering for a different aspect ratio, or rewriting a title for clarity leaves the numbers untouched and is not logged.
Illustrative figures
Some clips use calculated or teaching figures rather than measurements — a birthday-paradox probability is arithmetic, not a survey. Those are labelled as such in their source line from the start. A clip whose source line failed to say so is a correction.
Reporting one
Send the video’s title, the figure you think is wrong, and what you believe the correct figure is — ideally with a source. The contact page has the address. Corrections are worth more than reach, and a reader who checks the numbers is doing the most useful thing anyone can do with this site.
How every number is checked
Each clip lists the page behind every figure on its Sources tab, and says who published it. We rank publishers: a primary source is the body that produced the figure (a statistics office, an agency, a league’s record book); a research source is an institute, journal or company publishing its own measurement; a news report is only ever a second confirmation. Wikipedia, blogs and sites that republish other people’s tables never count.
Where a public data service exists (the World Bank, Our World in Data, Eurostat) the numbers are read from it directly instead of being retyped, and the clip says so. Before a clip is made, an independent review re-opens every cited page and confirms each figure, and the Sources tab lists what it checked. Estimates and figures that sources disagree on are labelled, with a note on how they were counted.
Sources get revised, so published clips are re-read from their sources from time to time; a clip whose figures had not changed shows the date it was last re-checked. If they had changed, the correction below is the record. See who our numbers come from.
The log
Nothing logged yet. That is not a boast — the library is young, and an empty log mostly means few people have checked.