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CODE Method Reference

Source: Building a Second Brain by Tiago Forte

Table of Contents


Overview

CODE is the four-step workflow for building and using a Second Brain:

Capture → Organize → Distill → Express

Each step builds on the previous, creating a cycle of knowledge capture and creation.


1. CAPTURE: Keep What Resonates

The Principle

Don't try to capture everything. Capture what resonates with you emotionally or intellectually.

What to Capture

  • Inspiring: Uplifting quotes, stories, ideas that move you
  • Useful: Templates, processes, mental models, how-tos
  • Personal: Your experiences, reflections, lessons learned
  • Surprising: Challenges assumptions, offers new perspectives

Capture Sources

  • Highlights from books/articles
  • Voice memos and quick thoughts
  • Images and screenshots
  • Meeting notes
  • Quotes from conversations
  • Social media saves
  • Email excerpts

The 12 Favorite Problems Filter

Richard Feynman's technique: Maintain 12 open questions you care about.

When you encounter new information, ask: "Does this relate to one of my 12 problems?"

Example problems:

  • How can I be more productive without burning out?
  • What makes a great leader?
  • How do I build lasting relationships?

Capture Best Practices

  • Capture liberally, curate ruthlessly later
  • Don't over-organize during capture
  • Use whatever tool is fastest in the moment
  • Trust that you'll find it later
  • Add minimal context (source, date)

2. ORGANIZE: Save for Actionability

The Principle

Organize information based on when you'll use it, not what it's about.

The PARA System

01_Projects/  → Active projects with deadlines
02_Areas/     → Ongoing responsibilities
03_Resources/ → Topics of interest
04_Archives/  → Completed or inactive items

The Key Question

"In what project will this be most useful?"

Organization Flow

New Item Arrives
       ↓
Is it actionable with a deadline?
├── YES → Projects
└── NO → Is it an ongoing responsibility?
    ├── YES → Areas
    └── NO → Is it useful reference?
        ├── YES → Resources
        └── NO → Archive or Delete

Organization Best Practices

  • Process inbox within 48 hours
  • Don't create categories that don't exist yet
  • Move things between categories freely
  • When in doubt, put in Resources
  • Archive liberally - you can always retrieve

3. DISTILL: Find the Essence

The Principle

Every time you touch a note, make it a little more useful for your future self.

Progressive Summarization

Five layers of distillation:

Layer 0: Raw Capture

The original content, unprocessed.

Layer 1: Captured Notes

Initial highlights and excerpts you saved.

Layer 2: Bold Passages

Bold the most important 10-20% of your notes.

Layer 3: Highlighted Core

==Highlight== the top 10% of the bold passages.

Layer 4: Executive Summary

Write a brief summary in your own words at the top.

Layer 5: Remix

Transform into your own original content.

When to Distill

  • Don't distill everything upfront
  • Distill when you encounter a note again
  • Each touch adds value
  • "Just-in-time" summarization

Distillation Best Practices

  • Highlight for your future self, not for completeness
  • Ask: "What would make this useful in 6 months?"
  • Use formatting consistently (bold, highlight, headers)
  • Add your own thoughts and connections
  • Don't over-distill - preserve enough context

4. EXPRESS: Show Your Work

The Principle

The purpose of a Second Brain is not to collect, but to create.

Types of Expression

  • Blog posts and articles
  • Presentations and talks
  • Reports and proposals
  • Creative projects
  • Decisions and strategies
  • Conversations and advice

Intermediate Packets

Small, reusable pieces of work:

  • Distilled notes
  • Outlines and drafts
  • Graphics and images
  • Code snippets
  • Checklists and templates

Benefits:

  • Reduce activation energy to start
  • Make progress visible
  • Enable reuse across projects
  • Allow collaboration

The Archipelago of Ideas

Instead of starting with a blank page:

  1. Gather relevant notes (islands)
  2. Arrange them in rough order
  3. Build bridges between them
  4. Fill in the gaps

Expression Best Practices

  • Ship regularly, even if imperfect
  • Reuse intermediate packets
  • Link back to source notes
  • Celebrate completions
  • Archive finished projects (they're achievements!)

The CODE Cycle

CODE is not linear - it's a cycle:

     CAPTURE
        ↓
    ORGANIZE
        ↓
     DISTILL
        ↓
     EXPRESS
        ↓
   (feeds back to CAPTURE)

What you create (Express) generates new insights to Capture.


Weekly Review Integration

The weekly review keeps CODE flowing:

  1. Clear inbox (Capture → Organize)
  2. Review projects (check progress)
  3. Distill recent notes (add value)
  4. Plan expression (what will you create?)

Reference compiled from "Building a Second Brain" by Tiago Forte.