Evidence policy
Written by: Fatih
Every claim carries a status, and the status says how much weight the claim may bear. These labels are not decoration: a mechanical check stops a low-status claim from being written in confident language.
| Status | Meaning | Where it may be used |
|---|---|---|
verified | Primary source, or two independent sources | Anywhere |
observed | Single measurement from a secondary source | With the source named |
hypothesis | Derived, or weakly sourced | Never in confident language |
expired | The measurement has aged out | No live text may rest on it |
superseded | A later measurement refuted it | No live text may rest on it |
We do not delete
expired and superseded rows are never removed.
Having been wrong stays on the record; otherwise a “we were always right”
impression could be manufactured. Corrections are also collected on the
Corrections page.
An example — our own mistake
An early draft claimed Turkey led the world in crypto adoption. Measured, the answer was different: in Chainalysis’s 2025 index Turkey ranks 14th globally, first in its region. The sentence was corrected and the reason recorded. That is precisely why this page exists.
We say when we could not measure
When we cannot measure something we do not say “probably”; we say “we could not measure it” and write down why. A source closing its door to us does not entitle us to a verdict about that source.