dual-brain

Your second brain is half a brain. This adds the other half.

v2.0 — the first major upgrade: 5 new skills (18 total), a cold evaluation agent for deliverables, guardrail hooks, provenance markers for wiki claims, and a rewritten retrieval canon. Everything was battle-tested in a production vault for three months before landing here. Details in the CHANGELOG.

The Problem

I built a second brain. 350 wiki entries. Structured, interlinked, steadily growing. I followed the Karpathy approach: curated sources in, LLM-maintained wiki out. The collection part worked beautifully.

Then Monday morning hits. You are planning your week, prepping a pitch, drafting an email to a stakeholder. And your wiki just sits there. You know you wrote something about this six weeks ago. You know there is a framework that fits. But the gap between "I stored this somewhere" and "it shapes my work right now" is wider than you think.

The second brain had long-term memory but no working memory.

The Idea

Your brain does not have one memory. It has two. Long-term memory stores what you know. Working memory handles what you are doing right now. They work together: working memory constantly pulls from long-term memory. And occasionally, something from your daily work is important enough to commit to long-term storage.

Dual Brain mirrors this in a single Obsidian vault: