RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-25905
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Case 210 — Reading a timegrapher recording without losing the context · correction exercise
Correction note for “Reading a timegrapher recording without losing the context”: retain the wording beginning “A single number cannot establish service condition, movement identity…” in the record. If later material changes it, add the date, the changed wording and the source for that change; do not invent a completed correction here. Preserve the old wording if a later source changes the interpretation.