Core principle: One idea per note. Each note should be able to stand alone.
Why Atomic?
| Giant Document | Atomic Notes |
|---|---|
| Think vertically, chronologically (A → B → C) | Think in 3D—up, down, diagonal |
| Remove A and C, you forget B | Each idea stands alone |
| Ideas trapped in one context | Ideas become movable building blocks |
| Hard to recombine | Easy to rearrange and connect |
Charlie Munger: “The first rule is that you can’t really know anything if you just remember isolated facts and try and bang ‘em back. If the facts don’t hang together on a latticework of theory, you don’t have them in a usable form.”
Atomic notes create the building blocks. Links create the latticework.
Luhmann’s Rule
Each idea should fit on an index card. Small enough to be a single thought, complete enough to be understood without context.
Three Categories of Atomic Notes
When processing, break ideas into:
| Category | What It Is | Example |
|---|---|---|
| Questions | What the idea answers | ”Why do generalists outperform long-term?” |
| Ideas | Core concepts | ”Sampling period enables later specialization” |
| Supplementary Tools | Evidence that supports ideas | Quotes, anecdotes, scientific studies |
See Q-I-ST Framework for details.
Why separate them? A study can support multiple ideas. A question can have multiple answers. Keeping them atomic lets you recombine freely.
Practical Test
Can you move this note to a completely different context and still understand it? If yes → atomic. If no → still dependent on original context.
Common Trap
Over-atomizing. You don’t need a separate note for every sentence. The test is: “Is this a distinct idea that might connect elsewhere?” If two things always travel together, keep them together.
North: Where does this comes from?
- Zettelkasten Method (parent system)
- [[Cognitive Science)](Chunking (Cognitive Science|Chunking (Cognitive Science)]]) (how working memory handles complexity)
East: What opposes this?
- Linear Note-Taking (follows author’s structure)
- Topic-Based Organization (groups by subject, not by idea)
South: Where this leads?
- The Idea Compass (connecting atomic notes)
- Generating New Ideas (recombining atoms into new molecules)
West: What is similar?
- Single Responsibility Principle (software: one class, one job)
- Index Cards (physical constraint forces atomicity)