---
title: "Structuralism in Note-Taking: Structure Complex Ideas"
description: "To structure complex ideas, stop using folders. Real structure is connection, not containment: a network of linked ideas, the way the brain actually stores knowledge."
url: https://buildfirstbrain.com/journal/structuralism-in-note-taking/
canonical: https://buildfirstbrain.com/journal/structuralism-in-note-taking/
author: "Lawrence Arya"
authorUrl: https://www.linkedin.com/in/vibecoding/
published: 2026-05-31
updated: 2026-05-31
category: "First Brain & PKM"
tags: ["note-taking", "zettelkasten", "knowledge structure", "first brain", "networked thought"]
lang: en
---

# Structuralism in Note-Taking: Structure Complex Ideas

> **TL;DR** To structure complex ideas, stop reaching for folders. A hierarchy forces each idea into one box, but complex ideas belong to many contexts at once, so hierarchies break down as they grow. Real structure is not containment but connection: a network of atomic ideas linked to each other, the principle behind Luhmann's Zettelkasten. Structure your thinking the way the brain does, as a topology of relationships, not a tree of folders.

## How to structure complex ideas

The reflex is to reach for folders, and that reflex is the problem. A folder hierarchy forces every idea into exactly one place, but complex ideas refuse to sit still: an insight about organizational psychology is [equally relevant to leadership, behavioral economics, and several other domains at once](https://zettelkasten.de/introduction/). The moment you file it under one heading, you have hidden it from every other context where it matters. As the structure grows, hierarchies suffer folder proliferation and you spend more energy deciding where things go than thinking about them. Structure-as-containment breaks down precisely when the ideas get interesting.

So the goal is not a better tree. It is a different kind of structure entirely.

## Structure is connection, not containment

The most powerful note system ever documented was built on this principle. Niklas Luhmann's [Zettelkasten](https://yannherklotz.com/zettelkasten/) was a network of atomic notes, each holding one idea and linked to related ones, and from it he produced 58 books and hundreds of articles. The core rule is simple and radical: you [connect notes, you do not file them](https://get-alfred.ai/blog/zettelkasten). When a new idea arrives, your job is not to decide which folder it belongs in; it is to find the existing notes it relates to and link them. Structure is not imposed from the top; it [emerges from the bottom, out of the connections](https://storyflow.so/blog/what-is-a-zettelkasten-complete-guide).

This is why complex ideas finally hold together in a network. Each idea can live in as many contexts as it genuinely belongs to, and you navigate by following links from an entry point, discovering relationships you did not plan. The structure is the web, not the boxes.

| Dimension | Folder hierarchy | Connected network |
| --- | --- | --- |
| Where an idea lives | In one folder, hidden from the rest | In as many links as it relates to |
| As it grows | Folder proliferation, harder to place | Denser, more useful |
| How you find things | Remember the right folder | Follow links from any entry point |
| What emerges | A rigid tree you maintain | A map of relationships that thinks with you |

## Structure the topology, not the tree

Here is the deepest version of the point. True structure is not the container; it is the topology, the pattern of connections, the same way your brain stores knowledge not in labeled drawers but as a web of associated concepts. To structure a complex idea is to relate it: to ask what it connects to, what it contradicts, what it explains, and to draw those edges explicitly. The map you build that way mirrors the way you will actually think about the subject.

That is the connecting work of [cognitive mapping](/journal/cognitive-mapping-how-to-build-your-first-brain/) and the reason learning to [think in knowledge graphs](/journal/how-to-think-in-knowledge-graphs-a-mental-framework/) is the foundation of handling complexity. It is also why the headline feature of networked notes has to be used with judgment rather than worshipped, the caution we raised in [the cognitive cost of bi-directional linking](/journal/the-cognitive-cost-of-bi-directional-linking/): a link is only structure if it carries meaning. Structure complex ideas by connecting them, and the structure becomes a First Brain you can navigate. That is the argument of [Building Your First Brain](/), free for the first 1,000 readers.

## Frequently asked questions

### How do you structure complex ideas?

By connecting them, not filing them. Treat each idea as an atomic note and link it to every related idea, letting structure emerge from the web of connections rather than forcing each idea into a single folder. As Building Your First Brain by Lawrence Arya frames it, true structure is the topology of connections, the way the brain stores knowledge, so you map relationships rather than build a tree.

### Are folders bad for notes?

Folders are fine for simple, clearly separable material, but they fail for complex, cross-cutting ideas, because each idea must go in one place while it actually relates to many. As a knowledge base grows, folder hierarchies become harder to maintain and hide ideas from the contexts where they matter. A linked network scales far better.

### What is a Zettelkasten?

A Zettelkasten is a networked note system, made famous by sociologist Niklas Luhmann, in which each note holds a single idea and is linked to related notes rather than sorted into folders. Luhmann used it to produce an enormous body of work by navigating connections, and it is the classic model of structure as connection rather than containment.

### Why do my folders and hierarchies stop working?

Because complex ideas belong to multiple categories at once, so filing them in one folder hides them from the others, and as the system grows you face endless decisions about where things go. The hierarchy fights the cross-cutting nature of real knowledge. Switching to a linked network lets each idea sit in all the contexts it relates to.

### What is the best way to organize knowledge?

As a connected network rather than a rigid hierarchy: atomic ideas linked to the ideas they relate to, with structure emerging from those connections. This mirrors how the brain stores knowledge and how you will actually think about the subject, making complex material navigable and revealing relationships a folder tree would hide.

---

Source: https://buildfirstbrain.com/journal/structuralism-in-note-taking/
Author: Lawrence Arya — https://www.linkedin.com/in/vibecoding/