Most advice about note-taking is advice about tools, not thinking. Switch to Obsidian. Use Zettelkasten. Try spaced repetition. The assumption is that the right system will make you smarter.

It won’t.

Notes are a byproduct of thinking, not a substitute for it. The moment you start optimising your note-taking system instead of the ideas in it, you’ve inverted the relationship. The map has eaten the territory.

What notes are actually for

There are two useful things notes can do: extend your working memory during a task, and create a retrieval cue for later. That’s it. A note that does neither of those things is a distraction.

Working memory extension looks like: a scratchpad while reading, a draft while writing, a list while planning. These notes are ephemeral by nature. Keeping them forever is hoarding.

Retrieval cues are different. A short note that accurately captures the shape of an idea — not the idea itself — is worth keeping. When you encounter the cue again, the idea reconstructs. If it doesn’t reconstruct, the note wasn’t pointing at anything real.

The test

Before keeping a note, ask: would I recognise this as something worth thinking about again, six months from now? If not, let it go.

The best notes are the ones that surprise you when you rediscover them. Not because they’re brilliant, but because they’re still true.