Unit 6 (prompt-design): split criterion 2 (MEDIUM, preserve-by-default)#164
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…-default) Per docs/RUBRIC_AUDIT.md (MEDIUM): old c2 bundled 'names a concrete failure mode' with 'explains the mechanism.' Splits into name-the-failure-mode c2 and a new c3 (explain the mechanism); renumbers regime distinction to position 4. Rubric grows 3 -> 4. Preserve-by-default (docs/REGRESSION_GATE.md): faithful decomposition of the locked Opus values — old-c2=T → c2=T,c3=T. p007 is the lone c2=T/c3=F differential (its authored label says it names 'instructions miss edge cases' without the ambiguous-criteria mechanism); p009/p011 name no failure mode → c2=F,c3=F. No realignments, no judgment-flips. c4 (regime) carries old-c3 unchanged. Updated p007/p011 labels for the 4-criterion shape. Sonnet gate disagreements are documented calibration gaps, not edits to the gold standard. Known-bad p018 ERROR pair unaffected. Local lint, schema check, ingest-check, pytest all pass.
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Summary
Unit 6 (
prompt-design), fifth of the MEDIUM batch, under preserve-by-default.Rubric (3 → 4): c1 unchanged · c2 = name the failure mode · c3 (NEW) = explain the mechanism · c4 = regime distinction (was c3).
Preserve-by-default decomposition
Faithful decomposition of the locked Opus values:
No realignments, no judgment-flips. p007/p011 labels updated for the 4-criterion shape.
Post-split distribution (21 pairs)
8 × 4-of-4 · 3 × 3-of-4 (p006, p007-differential, p008) · 2 × 2-of-4 (p010, p011) · 1 × 1-of-4 (p009) · 5 on-topic-all-missed · 2 off-topic.
Note
The known-bad p018 (emoji + structured markdown + slashed percentages — reproducible grader-payload ERROR per UNIT_6_GATE.md) is unaffected by the split; it remains a documented known-bad marker.
Local validation
lint_unit_markdown/ingest_units --check— cleanrun_regression_set --check— 21 pairs validpytest— 20/20Test plan
Opened as draft.
Generated by Claude Code