Evidence
The evidence base, in four parts. All of it checkable.
Trackers we maintain, papers we stand behind, the method that produced them, and the log of every time we got it wrong.
Trackers
Three series, maintained to one standard, with formulas, sources and retrieval dates published alongside every release.
Publications
Working papers, method notes, reports and watching briefs — each with its own tag census on the cover.
Methods
What earns an [A], what is only ever a [B], and why a [C] must never be laundered into either.
Corrections
Every correction, dated, with what was wrong, what it now says, and who found it.
Read the tag before you read the number.
The tag is not decoration. It tells you what kind of claim you are looking at, and therefore what you may safely do with it.
- [A]
- Verified against a primary source.
- [B]
- An organisation's own claim, reported as such.
- [C]
- An estimate, including our own arithmetic.
Tag census across the three trackers
MoU Tracker
TN Retained Income series
Learning-outcome index