Linking is what turns a folder of notes into a network of ideas. It's the bit people get most excited about, usually after seeing a graph view of dots and lines.
But I see two opposite mistakes. People who don't link at all, so their notes stay as islands. And people who link everything, so their notes turn into noise.
How do you find the middle?
Why linking matters
The brain stores information as a web. If I say "Apple", you think of Steve Jobs, the iPhone, the App Store, the MacBook. Memories are associated with other memories, and association is what helps us recall.
Your notes can work the same way. Understanding doesn't just live in a single note. It also lives in how your notes connect.
A simple test
When I'm deciding whether to add a link, I imagine myself in six months. I've forgotten the detail, and I'm rediscovering this note with fresh eyes. What would be useful to look at next?
If a link would help future me, I add it. If it wouldn't, I leave it out. Here are the situations where I most often say yes.
1. When the note assumes you know something
Notes should be understandable on their own, but sometimes a note rests on a prior concept or source. A note summarising the results of a peer-reviewed study is an example. Link to the study itself and you've given context for what it set out to discover and how.
2. When it sparks lateral thinking
This is my favourite. Imagine you're writing about how DNA mutates. While writing, your mind wanders. DNA is a medium that holds information. Stories also hold information. Stories get passed down from generation to generation and change subtly along the way. They mutate.
That's the moment to capture a new note, "Mutations within storytelling", and link it back to your DNA note. And now the questions start. Do stories mutate through errors in retelling, or because people deliberately change them, like a child inheriting traits from two parents?
You didn't plan that insight. It appeared because you gave yourself a lightweight way to follow a thought.
3. When you want to test an idea somewhere else
You've noted that a young child can remember an emotional experience but not the reason behind it. Does that apply to pets? To colleagues? To machine learning algorithms? Jot the questions down in a note and link back.
4. When a thought pops into your head
Capture it as a quick note and link back to what sparked it. Then, and this part is important, return to what you were doing. Try not to chase every rabbit hole in the moment.
When not to link
Don't keep linking to a core concept. It's tempting to link to your "Growth Mindset" note every time you mention growth mindset. Don't. It makes noise. Create a Map of Content for the topic and link everything from there. Your software's backlinks will show you which maps a note belongs to.
Don't automate it. Tools that auto-link notes by keyword can be out of context ("working memory" means something very different in computing and in learning). And there's a bigger reason: it skips your own thinking. You hand the job of connecting ideas to a machine, and you end up less aware of what's in your system. A lot of your best insights happen on a walk or doing the dishes, but only if you've paid attention to the notes in the first place.
Quick rule of thumb
Link when the connection would help future you think. Skip it when it would only help future you scroll.
There's an even more powerful kind of link
When two notes spark a brand-new idea together, you can capture it in a note of its own that sits between them. It's how original thinking starts to emerge from your notes. In Atomic Note-Taking I cover these intermediary notes, the two styles of link (conversational vs archivist), bi-directional links and how to use them, with real examples.
