Conciseness

The body is lean and assumes Claude's competence — roughly 20 lines with no padding, no explaining of concepts Claude already knows, and every line earning its place ('three sentences wearing a trench coat' is memorable, not filler). It is not 4 because there is no over-explanation left to trim.

Actionability

For an instruction-only skill, the guidance is concrete and actionable: numbered rules with quoted bad/good examples, a re-anchoring pattern ('the substrate (the shared statement-walking layer)'), explicit anti-patterns ('module name → File'), and a self-check test ('Reread your draft as someone who skimmed...'). It is not 4 because specific examples cover the common cases and there are no meaningful gaps.

Workflow Clarity

This is a simple single-purpose skill whose action is unambiguous (unpack dense prose), and it includes a verification step — 'The test' section gives a reread-as-skimmer self-check loop. Per the simple-skills exception, the single clear action with a self-check warrants 5; no destructive/batch validation cap applies.

Progressive Disclosure

Under 50 lines, no external references needed, with well-organized sections ('The rules', 'The test') and no bundle files to navigate. Per the guideline for short, self-contained skills, this structure earns 5.

Specificity

Names the domain (explanation density: 'You write at the density of your own thinking and leave the reader to unpack it') but offers only generic behavioral actions rather than concrete skill capabilities. It is above 1 because it identifies a recognizable behavior, but below 3 because no 1-2 concrete actions are listed.

Completeness

It answers both 'what' (you write too densely and make the reader unpack) and 'when' ('Apply whenever explaining anything to a human — not just end-of-run summaries, every message'), with an explicit trigger clause. Below 5 because the 'what' is a stylistic critique rather than a concrete capability enumeration.

Trigger Term Quality

It includes some relevant terms ('explaining anything to a human', 'summaries', 'every message') that a user might gesture at, but these are generic and lack distinctive synonyms or the natural phrasing a user would say to invoke this skill. Above 2 because keywords are present and relevant; below 4 because common natural variations are missing.

Distinctiveness Conflict Risk

The scope ('every message', 'whenever explaining anything to a human') is very broad and would overlap with virtually any communication or writing-focused skill. Above 1 because it does name a recognizable niche (over-dense explanations); below 3 because the breadth still creates high overlap risk.