Study notes that survived the week
The notes worth keeping are the ones that can still explain an idea after the immediate context has faded.
The first version of a study note is usually evidence that I encountered something, not evidence that I understood it.
Highlights and copied definitions are useful during reading, but they often depend on the source for meaning. When I return later, they can feel like fragments from someone else’s train of thought.
Rewrite after the context fades
A stronger note survives separation from the original chapter, lecture, or conversation. It states the idea in plain language, identifies what problem the idea addresses, and includes an example that makes the distinction visible.
Waiting before rewriting is useful. A little distance reveals which parts were understood and which parts merely felt familiar.
Connect notes to questions
Notes become easier to retrieve when they answer a real question. Instead of filing a passage under a broad subject, I try to connect it to the problem that made it interesting.
That shift turns a collection of information into a working set of ideas: fewer fragments, more explanations, and clearer reasons to return.