Conciseness

The body is dense and load-bearing with no padding or explanations of known concepts (e.g., "Declaration `check` or saved generated Go is not execution.", "Preserve the first failure; an incomplete attempt is not success."), but the active workflow pins specific version numbers ("This current-source workflow targets Go **1.27.3**" and the "frozen Go 1.27.2 tutorial archive" mention) rather than confining all time-sensitive pins to a deprecated/old-patterns section, which the guidelines treat as a conciseness penalty. It is above the anchor-3 midpoint because every other sentence is operational, not explanatory.

Actionability

Every step gives copy-paste-ready shell commands with full argument lists ("./.gooo package execute --json --inputs examples/learn-gooo/inputs.json learn-gooo.workspace.json", the mktemp trial-dir setup, the check-tutorial-change invocation) plus expected concrete outputs ("score: 75", "remaining: 25", "in_range: true", "label: \"sensor: high\"") and the exact source edit ("replace the single `if score >= 60` condition ... with `if score >= 80`"). This matches the fully-executable, common-cases-covered anchor; the only conditional gap (obtaining the checkout) is explicitly handled ("Reuse an existing ... checkout, or obtain a reviewed revision").

Workflow Clarity

Six numbered steps in a clear sequence with explicit validation checkpoints and error handling: "Stop at the first failure and retain its diagnostic before changing the source or setup", compiler validation before skipping bootstrap ("validate its `version --build --json` record using this checkout's `tools/bootstrap-check.go`"), inspection of actual traces in step 3, and the step-6 three-record comparison that "checks typed fields, source digests, compiler identity and the edited replay's parent". The operations are non-destructive (fresh mktemp directory, preserved originals), so no validation cap applies.

Progressive Disclosure

The Conditional guidance section is a model of disclosure: "Read only the reference needed for the requested task" followed by three condition-linked, well-signaled pointers ([legacy snapshot](references/legacy-snapshot.md), [optional integrations](references/optional-integrations.md), [captured test assessment](references/captured-test-assessment.md)). All three referenced files exist in references/, are one level deep with no nested bundle references, and the main body keeps only the core tutorial while edge cases (legacy snapshot, ADK diagnostics, assessment) are appropriately split out.

Specificity

Four concrete third-person actions are listed: "Edit a small .gooo program, execute it, replay the saved execution and compare the observed change" — comprehensive coverage of the skill's behavior, matching the multiple-specific-actions anchor rather than the minor-gaps anchor below it.

Completeness

Both questions are answered explicitly: what — "Edit a small .gooo program, execute it, replay the saved execution and compare the observed change"; when — "when a user wants to learn or try Gooo", reinforced by an explicit negative trigger ("General Go development does not need this skill"). This matches the clear-and-explicit-both anchor; the 4-anchor's 'when could be more specific' does not apply.

Trigger Term Quality

Good natural-term coverage — "a user wants to learn or try Gooo", ".gooo program", "Gooo" — including the file extension, but common variations a user might say are missing (e.g., "tutorial", "first program", "getting started", "example"). This sits between the good-coverage (4) and comprehensive-synonyms (5) anchors, closer to 4 since several natural phrasings are absent.

Distinctiveness Conflict Risk

A clear niche (the Gooo language, .gooo files) with the main overlap risk — general Go development — explicitly excluded ("General Go development does not need this skill"), giving minimal conflict risk with existing skills.