菜单
First-principles reasoning: refuse inherited assumptions; derive from base truths.
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
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| name | first-principles |
| type | skill |
| hint | Decompose to atoms; rebuild from base truths; ignore analogy and precedent |
| version | 1.0.0 |
| tags | ["transferable","first-principles","reasoning","decompose","atoms","assumptions","base-truth"] |
| tier | ch0nky |
| complexity | 5 |
| description | First-principles reasoning: refuse inherited assumptions; derive from base truths. |
First-principles reasoning means refusing inherited assumptions and deriving conclusions from base truths. Step 1: state what you believe to be true about the problem. Step 2: for each belief, ask "is this a fact, or did I inherit it from convention?" Step 3: discard the inherited beliefs and rebuild from what remains.
Elon Musk's classic example: "batteries are expensive" → why? → materials → materials are cheap → rethink assembly. In software: "we need a database" → why? → persistent state → what's the simplest persistent state? The key test: "would this design make sense to someone who had never seen this domain before?"
Apply first-principles thinking to high-stakes decisions where inherited assumptions may be hiding better solutions. It is expensive — do not use it for every micro-choice. Use it when analogy reasoning ("we do it this way because that's how X does it") would lead to a suboptimal outcome.
