Conciseness

The body is lean at ~35 lines with a concrete scan list and named tools, but contains minor trimmable redundancy: "The goal here is getting a quick hydration of possibly relevant context... before doing a deeper dive" restates the section heading, and step 2's opening sentence largely repeats step 1's output. This matches 'efficient with minor instances of over-explanation' rather than 'every token earns its place'.

Actionability

Concrete guidance is present (a specific context scan list and the named tools `evidence_record`, `evidence_remove`, `evidence_list`), but the core step 2 — "dig deep into the most relevant pieces of context to gather enough evidence" — gives no concrete method, sources, or example of a recorded finding, leaving key details missing. This matches the 'some concrete guidance but incomplete' anchor rather than 'mostly executable with minor gaps'.

Workflow Clarity

A clear numbered three-step sequence (context hydration → dig deep → draw conclusions) with implicit checkpoints ("Record findings as you dig", "After gathering enough evidence") and a required evidence citation in the conclusion. Not destructive or batch, so no cap applies; it falls short of a 5 because there are no explicit validation or feedback-loop steps.

Progressive Disclosure

The skill is under 50 lines, needs no external bundle files (none exist), and is well organized into Procedure, Result, and Boundaries sections with numbered steps. Per the simple-skill guideline, this earns full credit with just well-organized sections.

Specificity

The description names the domain and the three outcome actions ("validate, invalidate, or reach an inconclusive result") but the means are generic — "take the necessary investigation steps" lists no concrete activities such as gathering or recording evidence. This matches the anchor for naming a domain with 1-2 concrete actions but not comprehensive coverage; it is above the minimal/generic anchor because the three distinct outcome actions are explicitly stated.

Completeness

It clearly answers 'what' ("take the necessary investigation steps to validate, invalidate, or reach an inconclusive result") but has no 'when' guidance at all — no "Use when..." clause or trigger context is present, which caps completeness at 3. It is not a 2 because the 'what' is clear rather than vague.

Trigger Term Quality

Terms like "hypothesis", "validate", "invalidate", and "investigation" are relevant to the domain, but the description misses common natural variations users would say, such as "test a theory", "verify an assumption", or "confirm or rule out". Some relevant keywords with missing synonyms matches the middle anchor.

Distinctiveness Conflict Risk

The hypothesis framing is somewhat distinctive, but "take the necessary investigation steps" broadly overlaps with general investigation and troubleshooting skills, and no distinguishing trigger phrases are provided. It could still overlap with similar skills, matching the middle anchor rather than the 'mostly distinct' anchor.