Verification hub
The plain-English boundary statement for every X'am reading.
An X'am is a sealed reading, fixed before we look, that shows what a system was permitted to do, what it actually did, and what it refused to do. It is evidence a stranger can verify without trusting us or you.
Everything below is the boundary of that sentence. We state it here once, in plain English, so nobody has to infer it from a certificate.
Where a position cannot be measured under the disclosed protocol, the reading records it as NOT-MEASURABLE. It is not scored, not estimated, and not filled in. An unmeasured position is unmeasured, not zero.