Memory isolation is the whole point
Long-term memory has to be persona-scoped from day one. Otherwise the AI brings up the wrong thing at the worst possible moment, and you stop trusting it.
Exploring the echoes reverberating through time left by the technology of yesterday as we embrace the technology of tomorrow.
A local-first second brain: how I built mine
The practical version of the second-brain piece, what I actually run on Apple Silicon, how notes get captured, how search and RAG work against my personal corpus, which models do which jobs, and what the daily loop feels like once it's in place.
AI in the news: week of April 19, 2026
Anthropic ships Claude Opus 4.7 with a tokenizer change that quietly raises the bill ~15-25% at the same headline price. OpenAI fires back with GPT-5.4-Cyber. MiniMax open-sources a self-evolving agent model that ends the hosted-frontier argument. Q1 layoff data lands ugly.
MCP, but persona-aware
The tool-routing layer between an AI and the rest of your life has to know which persona is asking. Otherwise the wrong tool always shows up.
Personas at the model layer: prompt, tools, memory, all at once
When the persona switches, four things move at the same time: the prompt, the tool surface, the memory, and the identity doing the signing. All four. Atomically.
Sixteen years in cloud automation: what AI is changing now
Sixteen years in: vCAC, vRA, AWS, OpenStack, Kubernetes, Terraform, now AI agents. The honest read on what persists across the eras, idempotency, declarative state, policy-as-code, observability, and what's genuinely different about agents.
Cosmology for multi-tenant: universe, system, environment
The standard tenant / sub-tenant framing for multi-tenant is too thin. The cosmological metaphor, universe, galaxy, solar system, environment, gives you a layered model that maps onto the scopes that actually matter: compliance, billing, isolation, hierarchy.
Projects: the second axis of persona scope
Personas are the top-level containers. Projects are the next layer in. Here's why projects belong nested inside personas, not floating around as flat tags.
vCAC was actually preparing me for this
Years before AI agents, I was writing workflows that called other workflows, enforcing policy at the orchestration layer, and arguing about idempotency. vCAC turned out to be the apprenticeship for everything I'm doing now.
AI in the news: week of April 12, 2026
The closed-frontier club tightened. The big three US labs are sharing intelligence on Chinese distillation. Broadcom-Google-Anthropic locked TPU production through 2031 with 3.5 GW behind Claude. Meta walked away from open weights with Muse Spark. Mythos Preview held the safety line.
Backstory: when the AI needs to know who you are
Some personas need to know my whole story. Others don't need to know my name. Backstory is a purposeful choice, not a default setting.
The user and the AI share the same persona
If the AI's persona and the user's UI drift apart, you're back to the leak. The symmetry rule says: when one shifts, the other shifts with it.