Conciseness

The body is dominated by lean, fill-in templates, but the funnel-stage table ("SEO, paid ads, referral, partner integrations...") restates funnel knowledge Claude already has and a few rationale lines ("Without it, you're guessing and won't learn from the result") could be trimmed — minor over-explanation matching anchor 4 rather than the fully lean anchor 5.

Actionability

Concrete field-by-field templates for the hypothesis, experiment definition, metrics, and decision playbook give mostly executable guidance, but "use lumen-abtest for precise calculation", "verify with lumen-instrument", and the output format deferred to docs/output-kit.md provide no commands or resolvable paths, leaving minor gaps versus anchor 5.

Workflow Clarity

Eight explicitly sequenced steps, a decision playbook covering every outcome branch (WIN/LOSS/GUARDRAIL FAIL/EARLY STOP) as error-recovery feedback loops, and an implementation checklist in Step 7 match the anchor 5 pattern of clear sequence plus explicit checkpoints and checklists; this design-only skill has no destructive operation requiring further validation.

Progressive Disclosure

Sections are well organized, but the output format is delegated to docs/output-kit.md which does not exist in the bundle (no references/, scripts/, assets/, or docs/ directories), and lumen-abtest, lumen-instrument, and /atlas-report are referenced without paths or explanation — references present but not clearly resolvable, matching anchor 3.

Specificity

"structure a growth hypothesis, define metric, baseline, expected lift, and kill condition" lists multiple specific concrete actions that comprehensively cover the single-experiment design scope, matching the anchor 5 example's level of coverage.

Completeness

It clearly answers 'what' (structure a hypothesis; define metric, baseline, expected lift, kill condition) and explicitly answers 'when' with an "Use when asked to..." clause listing concrete trigger phrases, exactly matching the anchor 5 pattern.

Trigger Term Quality

Five natural quoted trigger phrases ("design a growth experiment", "test this growth idea", "how do we test if this works") give good keyword coverage, but common variations such as "A/B test" or "run an experiment" are missing, so it does not reach comprehensive anchor-5 coverage.

Distinctiveness Conflict Risk

The growth-experiment niche is mostly distinct with specific triggers, but "experiment framework" and "how do we test if this works" are broad enough to overlap with general testing or software-verification skills, indicating minor overlap risk rather than minimal.