Each fact in a cycle is labelled by how it is known.
- Reported
- The responsible participant describes the result, scope and evidence.
- Author-tested
- The author ran a method and recorded environment, inputs and observations.
- Independently checked
- A reviewer who did not build the work checked the claim against inspectable evidence.
- Illustrative
- An invented example that explains a control. It is never evidence.
An internal proof of concept does not establish what a newcomer learns from the protocol. That needs its own pilot.