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Build logical causal trees from symptoms to root causes — list UDEs, connect causal chains, validate logic, locate root causes. Combines ishikawa-decomposition, current-reality-tree, and clr-validation SOPs.
Passed 17 of 22 test cases with the skill, and 10 of 22 without it.
and 12 more in the full report
10 fixed7 passed either way2 still failing3 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
A multi-center clinical trial experiences high inter-site variance in patient biomarker assays. Decompose contributing factors across scientific research dimensions, properly classifying operator variations and lab environmental factors.
| Checked | Without skill | With skill |
|---|---|---|
| Operator variations are assigned to the Researchers category. | Missed | Passed |
| Laboratory ambient conditions are assigned to the Environment category. | Missed | Passed |
The instructions your model reads when the skill loads.
Build formal causal trees from symptoms to root causes.
Subagent: five-whys-drilling, ishikawa-decomposition, current-reality-tree, clr-validation Import: paper-search
Decompose via Ishikawa (6M categories adapted for research: Methodology, Data, Theory, Measurement, Researchers, Environment). Build formal CRT with sufficient-cause logic. Validate every causal link with CLR 8-check.
<HARD-GATE>
- ishikawa diagrams: >= 1
- CRT constructed: >= 1
- CLR validations: >= 3 links validated
- root causes identified: >= 1
</HARD-GATE>
Optional, no fixed order; the final leaf is always a sop.
| SOP | When to use |
|---|---|
| clr-validation | Apply Goldratt's 8 Categories of Legitimate Reservation to validate causal claims. Tests clarity, existence, sufficiency, and logical integrity. |
| current-reality-tree | Build TOC Current Reality Trees — connect Undesirable Effects via sufficient-cause logic to identify 1-3 root causes. |
test cases passed, vs 10 / 22 without
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