thinking-second-order

npx skills add majiayu000/claude-skill-registry --skill thinking-second-order --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

# Second-Order Thinking ## Overview Second-order thinking, articulated by Howard Marks, moves beyond immediate effects to consider what happens next, and what that leads to. First-order thinking is simplistic ("This action solves the problem"); second-order thinking asks "And then what?" repeatedly. **Core Principle:** The obvious answer to "What should I do?" is often wrong because it ignores downstream effects. ## When to Use - Making strategic or architectural decisions - Evaluating policy or process changes - Considering incentive structures - Planning features that change user behavior - Decisions with long-term consequences - When the "obvious" solution feels too easy Decision flow: ``` Decision with consequences beyond immediate? → yes → APPLY SECOND-ORDER THINKING ↘ no → First-order may suffice ``` ## First vs Second-Order Thinking | Situation | First-Order | Second-Order | |-----------|-------------|--------------| | Team is slow | Add more engineers | More engineers → more coordination → slower decisions → may get slower | | Users complain | Add the feature they request | Feature → complexity → more support load → less time for core work | | Costs too high | Cut spending