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“How to Take Smart Notes” — concise, practical summary (Zettelkasten method)

Core premise
Writing is not a final step after thinking; it is the thinking. Build a system that continuously converts reading and ideas into interconnected notes, and writing becomes a natural by-product.


1. The four types of notes

  1. Fleeting notes

    • Quick, temporary capture of ideas.

    • Unstructured, incomplete.

    • Must be processed within 24–48 hours.

  2. Literature notes

    • Written while reading.

    • Summarize ideas in your own words.

    • One idea per note; include source reference.

  3. Permanent (smart) notes

    • Atomic, self-contained, and precise.

    • Written as if for a future reader (including your future self).

    • Stored in the main system and linked to other notes.

  4. Project notes

    • Task- or project-specific.

    • Not part of the core knowledge system.


2. The Zettelkasten principles

  • Atomicity: One idea per note.

  • Connectivity: Every note links to other relevant notes.

  • Context over hierarchy: No rigid folders; meaning comes from links.

  • Bottom-up structure: Structure emerges from notes, not upfront outlines.


3. Writing permanent notes (the most important step)

A good permanent note:

  • Makes one clear claim or concept

  • Is written in complete sentences

  • Explains the idea without referring back to the source

  • Explicitly states why it matters

  • Links to at least one other note

Example:

“Intrinsic motivation is more sustainable than extrinsic motivation because it reduces dependency on external rewards.”


4. From notes to writing

  • Writing is rearranging and expanding existing notes, not starting from a blank page.

  • Outlines emerge by clustering linked notes.

  • Gaps become visible automatically through missing links.


5. Why this system works

  • Reduces cognitive overload.

  • Prevents forgetting.

  • Encourages original thinking instead of copying.

  • Compounds knowledge over time.


6. Common mistakes

  • Copying text verbatim.

  • Creating long, essay-like notes.

  • Over-organizing folders.

  • Treating note-taking as archiving rather than thinking.


7. Tools (tool-agnostic)

  • Can be paper-based or digital.

  • Popular digital tools: Obsidian, Logseq, Roam, Notion (with discipline).


One-line takeaway

Don’t take notes to store information; take notes to generate thinking and future writing. 

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