Writes plain-language explanations connecting a concept's definition, mechanism, and actionable judgment.
npx skills add https://github.com/lijigang/ljg-skills --skill ljg-is
Please help me install this Agent Skill. Skill: ljg-is Source: https://github.com/lijigang/ljg-skills/tree/main/skills/ljg-is Command: npx skills add https://github.com/lijigang/ljg-skills --skill ljg-is
When users ask "what is X" or "how should I understand X", a bare definition or a list of uses rarely produces real understanding. This Skill turns a noun or concept into a usable explanation: it states what X is and how it differs from neighboring concepts, explains how X actually operates, derives what old judgment must be revised, and ends with concrete guidance for acting on that understanding.
Ask the assistant to use ljg-is to explain a concept you want to truly understand, for example: explain what recursion is and how to decide when to use it.
High-intent search queries and answers about installing and using this skill.
Invoke ljg-is with the concept name. It produces an essay that defines the concept against its nearest neighbors, walks through how it operates with a concrete example, states which prior belief must change, and gives guidance for acting on the new understanding.
It suits technical concepts like objective functions or recursion, plus institutions, platforms, roles, methods, and norms. It is not meant for pure fact lookup, formal proofs, step-by-step tutorials, or deep causal drilling, which belong to other skills.
It writes a timestamped Org file (or Markdown variant) to ~/Context named with the pattern timestamp--理解-target__is.org. The note carries ljg-is-v5 schema metadata fields: definition, operation, recognition, guidance, basis, and falsifier.
Run bun Tools/ValidateNote.ts with the note path. The validator checks schema, filename and identifier consistency, heading quality, paragraph counts, vague guidance, rumor-based evidence, and residue from older contract versions, exiting nonzero on failure.
Skip it when you only need a formal definition, a formula proof, a translation, or an operational tutorial. For vertical causal drilling use ljg-think, and for recurring motif structures use ljg-structure, as noted in the skill's boundary rules.
Agents4Academia-AIEdit knowledge-base pages using cited sources while preserving Markdown and LaTeX formatting.
KartikSharma4448Generate flashcards and quizzes from notes with SM-2 scheduling and Anki export.
zjykzkDrill claims to irreducible core principles through sequential justification.
lightxueDeconstruct concepts into eight exploratory dimensions and produce a markdown report.
