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First Principles Thinking
Table of Contents
Rebuild from what you actually believe, not a quote filed as someone else line.
Key Concept
- A saved quote is not a principle until you rebuild the claim in your own words.
- The Feynman Technique tests the rebuild through plain teach-back.
- The tell: can you defend it without citing the source? If not, you do not own it yet.
- You cannot explain, extend, or apply an idea you never rebuilt.
Level 1 - Recognize
First-principles thinking rebuilds an idea in your own words before you trust the bookmark - a saved quote is not yet a principle.
Level 2 - Explain
Like translating a recipe into ingredients you can shop for - borrowed language hides gaps until you reconstruct the claim.
Level 3 - Use
Explain the idea on a blank page without citing the source - the stumble marks the gap worth drilling next.
Level 4 - Connect
Because borrowed language hides gaps, rebuilding exposes what you actually understand versus what you only bookmarked.
Level 5 - Create
Rebuild the claim from its smallest defensible parts, then extend it to a new case and show where the original source no longer carries the reasoning.
Examples
- I kept quoting parenting advice from a podcast until I wrote what I actually believe about bedtime - first principles was my own claim, not someone else's quote.
- The HOA kept adding signs about parking until a neighbor asked why people park wrong - turns out we needed one marked loading zone, not five new rules.
Note Relationships
| Relationship | Wikilink | Reason |
|---|---|---|
| alternative | Mental Models | Strip-to-basics vs pick-a-model when a lens beats invention |
| alternative | Renewed Mind | Received gospel mind vs ethics derived from scratch |
| contradicts | Eternal Principles | when I treat gospel ethics as ideas I invented |
| extends | Eliminate Before Managing | Strip-to-basics asks whether a dangerous step is necessary before you manage it |
| extends | Synthesis as a Goal | Synthesis means rebuilding a note from what you actually believe, not someone else's quote |
