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Remember Everything You Read with This Free Obsidian Hack

Source: polymathinvestor.com

A polymath investor shares a simple system to retain nearly everything from books and articles.
The method uses a free tool called Obsidian combined with daily 10-minute reviews to build a "second brain."
Readers can boost memory retention from under 10% to over 90% without fancy apps or endless note-taking.

The article outlines a practical technique for remembering what you read, developed by the author after testing dozens of methods. It targets busy professionals and lifelong learners frustrated by forgetting books shortly after finishing them. The core idea is building a personal knowledge base using Obsidian, a free note-taking app, through structured capture and spaced repetition. This matters because it turns passive reading into active retention, freeing up knowledge for real-world use like