Building a Second Brain: The Illustrated Notes is an essay by designer Maggie Appleton that visually interprets the principles of 📝Tiago Forte’s 📝Building a Second Brain (BASB) framework. Appleton presents the system as a method for capturing, organizing, and transforming digital information into an external “📝Second Brain,” allowing ideas to be stored and revisited over time. She situates BASB within a broader historical lineage by comparing it to commonplace books, emphasizing that digital tools amplify the accessibility and scale of such practices.
Appleton highlights both strengths and limitations of the framework, describing it as an entry-level primer for personal knowledge management rather than a comprehensive or historically grounded model. She raises concerns about the commercial presentation of BASB, critiquing its high pricing and heavily marketed positioning. Furthermore, she questions the metaphor of a “second brain,” arguing that it neglects embodied cognition and tacit knowledge, which are central to how humans learn and create. Quoting Andy Matuschak, she encourages readers to apply discernment when engaging with popular productivity frameworks and to adapt them selectively to personal contexts.
For me, Appleton’s critique underscores the importance of building 📝Knowledge Management systems that integrate seamlessly with daily thought and creative flow. We have always imagined 📝MythOS as one such environment, where capturing, connecting, and sharing ideas happens fluidly, without friction or interruption.