Conciseness

The body is lean throughout: compact numbered templates (the 5-step Feynman format, the 5-stage path), a one-line SRS interval spec ("1天 / 3天 / 7天 / 14天 / 30天"), and short format examples. It assumes Claude's competence — e.g. it merely names "艾宾浩斯遗忘曲线" without explaining it — so every token earns its place.

Actionability

For an instruction-only skill the guidance is fully executable: copy-paste-ready formats including the Anki CSV with header and example row ("正面,反面,标签 / 什么是向量空间?,满足8条公理的集合...,math"), the review-table schema (| 知识点 | 下次复习 | 掌握度(0-5) |), the progress.md YAML template, and concrete quiz parameters ("5~10 道题" across four named difficulty tiers). These cover the common cases.

Workflow Clarity

The multi-step flow is clearly sequenced (path design → Feynman explanation → quiz → SRS update) with explicit checkpoints ("讲解中途停下来问用户:哪个部分不清楚/能否复述","一次讲一块,块结束必问反馈") and an update loop ("每次测验后更新掌握度与下次复习时间"). It falls short of the top anchor only because there is no explicit error-recovery path when a user fails a check question or quiz — remediation is implied via 薄弱点 tracking but not stated.

Progressive Disclosure

The skill is self-contained (~66 lines) with no bundle files and no external references to load; content is organized into six well-labeled sections. Nothing inlined here (the short CSV/YAML/table examples are a few lines each) warrants a separate reference file, so well-organized sections fully satisfy the dimension for a skill with no need for external references.

Specificity

The description enumerates five concrete capabilities — "新领域入门、概念讲解(费曼式)、测验生成、间隔复习规划、学习路径设计" — which comprehensively covers the skill's core functions as defined in the body. It is not merely naming the domain; each capability is a distinct, specific action, matching the comprehensive-coverage anchor rather than the minor-gaps anchor below it.

Completeness

It explicitly answers both questions: the "what" via "用于新领域入门、概念讲解(费曼式)、测验生成…" and the "when" via the explicit trigger clause "触发场景:想学某个新领域、某个概念没懂…", which is equivalent to a 'Use when…' clause with concrete trigger phrases. The explicit trigger guidance means the completeness cap for a missing 'when' clause does not apply.

Trigger Term Quality

The trigger scenarios are natural user phrasings ("想学某个新领域","某个概念没懂","需要练习巩固","制定学习计划"), giving good keyword coverage. Common variations a user might actually say — e.g. "教我…","怎么学","入门","复习","备考" — are missing, so it falls short of the comprehensive synonym coverage of the top anchor.

Distinctiveness Conflict Risk

The learning-coach niche ("知识学习教练","间隔复习规划","学习路径设计") is mostly distinct with dedicated triggers. However, "概念讲解" is broad and could overlap with general explanation/tutoring skills, and "制定学习计划" could collide with planning skills — minor overlap risk with closely related skills rather than minimal conflict.