Most PKM discussion focuses on managing external knowledge: books, articles, ideas from the world. But the most architecturally critical layer is internal: documenting who you are. Values, beliefs, strengths, weaknesses, life story, career trajectory, fears, vision, priorities. These are not just reflective exercises. They are structured notes that serve as the identity layer of the entire system.
What Identity Notes Contain
A mature identity layer includes interconnected notes on: core values and beliefs, personal principles, strengths and weaknesses, life story and key events, career history and trajectory, fears and anxieties, vision and purpose, current priorities, relationships and influences, recurring patterns of behavior. Each of these is a separate note (or cluster of notes), linked to each other and to the broader vault.
Dual Purpose: Reflection and AI Context
Identity notes serve two distinct purposes. First, personal reflection: the act of writing down your values, articulating your fears, and documenting your life story forces self-examination. You cannot write "my core values are X, Y, Z" without genuinely interrogating what you believe. This reflective function is valuable even without AI.
Second, AI context: identity notes are the layer AI agents need to act on your behalf. An AI writing assistant cannot match your voice without access to your writing style and values. An AI coach cannot give relevant advice without knowing your goals, constraints, and history. Identity notes are structured context that makes AI genuinely personal rather than generically helpful.
Connection to Context-as-Code
Identity notes are a concrete implementation of Context-as-Code. When identity is captured as structured, version-controlled notes rather than ephemeral conversation context, AI agents can load it reliably across sessions. The identity layer becomes part of the codebase that defines how AI interacts with you.
Connection to AI-Ready Second Brains
In the PKM-to-AI Readiness framework, identity represents the highest level of AI readiness. A vault with good notes but no identity layer can answer factual questions but cannot reason about what matters to you. A vault with a rich identity layer enables AI to prioritize, filter, and create in alignment with your actual self.
Connection to Exocortex
The Exocortex concept depends on identity. A digital twin that extends your cognition needs to know not just what you know, but who you are. Without identity notes, an exocortex is a search engine. With them, it becomes a genuine extension of your thinking.
The Most Personal Layer
Identity notes are rarely discussed in PKM communities because they are intensely personal. They require vulnerability. They are also the hardest to get right because identity is not static; it evolves. This means identity notes need their own review cadence, separate from knowledge notes. Periodic identity reviews ask: is this still true? Has this changed? What have I learned about myself since the last review?
Key Points
- Identity notes document who you are: values, beliefs, strengths, fears, vision, priorities
- Dual purpose: forces self-reflection and provides structured context for AI agents
- Identity notes are a concrete implementation of Context-as-Code
- The highest level of PKM-to-AI readiness; enables AI to reason about what matters to you
- Requires its own review cadence because identity evolves
Open Questions
- How much identity information should be exposed to AI agents vs kept private?
- What is the right granularity for identity notes: a few comprehensive documents or many atomic notes?
- Can AI help detect identity drift (stated values diverging from actual behavior)?
References
- Vault: Obsidian Starter Kit - Theory, About Me, Core Values, Personal Principles
- J.C.R. Licklider, "Man-Computer Symbiosis" (1960) — early vision of human-computer cognitive partnership