en-gbhttps://rhostone.co.uk/lab-book/RhoStone’s lab book: entries on models, contracts, data and the decisions that depend on them.https://rhostone.co.uk/lab-book/complex-systems.htmlhttps://rhostone.co.uk/lab-book/complex-systems.htmlEvery model leaves most of the world out. The work is choosing what to drop, and noticing when something you dropped starts driving the result.Mon, 28 Sep 2026 00:00:00 GMThttps://rhostone.co.uk/lab-book/between-disciplines.htmlhttps://rhostone.co.uk/lab-book/between-disciplines.htmlMoving a clause from contract language into a state machine, then into a financial model, exposes gaps each vocabulary hides. It also loses things.Wed, 30 Sep 2026 00:00:00 GMThttps://rhostone.co.uk/lab-book/models-to-decisions.htmlhttps://rhostone.co.uk/lab-book/models-to-decisions.htmlMost of the effort in a risk model goes into the prediction. Most of the trouble turns up between the number and the person who has to act on it.Thu, 01 Oct 2026 00:00:00 GMT