Field Notes

Writing on world models, agents, causal inference, and the future of operational decision-making.

Featured · Worked decision · May 2026 · 12 min read · Zubair Magrey

Should we commit $400M more to memory chip inventory?

Memory chips are being discontinued and prices are up tenfold. One decision, worked end to end: the cascade across five functions, the console, every move scored side by side, and the recommendation with its trace.

Read the worked decision →
PRICESUPPLY
Sep 2026

Ergodic Recognised in Nucleus Research's 2026 Control Tower Technology Value Matrix

Nucleus Research has named Ergodic in its 2026 Control Tower Technology Value Matrix. Here's how we're working in supply chain.

Supply Chain · 2 minMichaela Murphy
Sep 2026

Ergodic Wins Innovate UK Backing for Causal World Models

Over the next six months, our team will research causal world models that can learn a task in one environment and perform it reliably in another.

World Models · 3 minMichaela Murphy
Jul 2026

Context Graphs: Seeing Your Supply Chain As It Actually Is

Your supply chain isn't a list of vendors. It's a living graph of relationships, flows, and dependencies. Here's why that distinction matters when things go wrong.

Supply Chain · 9 minAndre Franca
Jul 2026

The Causal Learning Series: An Introduction

A guided, ground-up path through causality, the discipline behind every world model. Start with why correlation was never enough, and build toward models that reason about cause and effect.

Causal Learning · 4 minMichaela Murphy
Jun 2026

Agent Capabilities Are Growing, But The Architecture Hasn't Caught Up.

Agents are being handed decisions of increasing consequence, but the frameworks underneath were built for tasks. The missing layer is a world model that lets an agent simulate before it acts.

World Models · 14 minMichaela Murphy
May 2026

The Revenue Decision Agent: Simulate the Quarter Before You Commit

Revenue tools score deals and transcribe calls. None of them can answer the question every CRO carries into the quarter: what happens if we act?

Revenue · 9 minMichaela Murphy
May 2026

The Operations Decision Agent: Run the What-if Before You Commit Inventory

Planning tools optimise a fixed model of the operation, and dashboards report problems after they've happened. Neither can answer the question that defines operations work.

Operations · 9 minMichaela Murphy
Feb 2026

Loops: How AI Agents Get Things Done, and How a World Model Rebuilds the Loop

Every AI agent runs on a loop, repeated until a goal is met. A world model inserts a step that has never been there, and wraps a slower loop around the whole thing that learns from what happened.

Foundations · 8 minMichaela Murphy
Jan 2026

AI Agents Need A Robust Data Foundation

Before AI agents can optimise your supply chain, they need something to reason about. That something is a context graph they can traverse, query, and simulate against.

Agents · 8 minMichaela Murphy
Nov 2025

What Are Enterprise World Models?

A world model carries a causal representation of a system and evolves it forward under the actions you take. Applied to an enterprise, that means state, transitions, and an entity graph carrying the constraints the business obeys.

World Models · 12 minMichaela Murphy

The Causal Learning Series lives in the Ergodic documentation.

Go from reading to running.

Bring a decision. We'll discuss how to model it and what data a simulation would need.

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