I’ve been building what I call my “Second Brain,” an Emacs-based knowledge management system that doesn’t just store notes, but actively helps me think. It’s built on org-roam, extended with semantic search via vector embeddings and proactive surfacing of relevant information. The goal isn’t to replace my thinking but to augment it, surfacing connections I might miss and nudging me toward follow-ups I’ve forgotten.

Why Emacs and Org-roam#

Before diving into what I’ve built, it’s worth explaining the foundation I chose.