← Index of published work

6 entries

1. SEP 24, 2026

   The Answer Key and the Instrument

   Hammer's harness experiments expose uneven AI judgement. The work is choosing the right actuarial method, using evidence, and completing a defensible analysis.

2. SEP 8, 2026

   The Clock You Don't Control

   Regulated businesses run on two clocks. The data ticks on schedule. The rules tick whenever they want. Everything hard about AI in these industries lives in the gap between those clocks, and there is exactly one architecture that closes it.

3. SEP 1, 2026

   Hello (Hammer) Worlds

   Frontier world models for people who do not merely produce numbers. They have to defend them months later.

4. JUL 30, 2026

   Same Rule, Opposite Signs

   Banking ran our definition-change test for us, better documented than we could have managed, and the answer was not the one anybody expects. On one day in January 2020 a single accounting rule moved reserves up at three banks and down at a fourth, and up and down inside the same bank. That gives a coherence test costing one group-by, and it also breaks a category we had been treating as one thing.

5. JUL 27, 2026

   The Rules Are Half the Physics

   Regulated industries break world models in four specific ways: colliding clocks, feedback loops, legal fences, and your own output becoming your next input. They also hand you the one thing world-model builders everywhere else lack, which is a supply of free, dated, published interventions to test against.

6. JUN 22, 2026

   Hello World Models

   Why we build practice worlds for regulated AI, learned from games. The story behind the series, and what it explores: costs, tradeoffs, and worlds grown from the law itself.