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Writing

Judgement, in public.

Cases, method, and the occasional piece someone else wrote. All of it here, in one list.

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Article
Measuring the walk
May 2026
27 controlled trials to find out what an AI agent review phase costs, and what it buys. The cost came back clean. The second question turned out to be unanswerable by this design — and establishing that took more work than the cost model did.
Article
Seven questions to answer before anyone quotes you
March 2025
Most projects that run over budget, over time and over everyone's patience start from a brief too vague to say what success looks like. Seven questions that need no technical knowledge, and one that most briefs get backwards.
Case study
54 containers in four months
2015—2017
A R85m IDC-backed retail precinct built from shipping containers in about a third of the time conventional construction would have taken, with an entrepreneur incubation programme running inside it.

Everything

ArticleAugust 2026The cost lever nobody is optimisingAcross 27 controlled trials of an AI coding workflow, the largest single cost difference measured had nothing to do with how many agents ran. It was how one session searched the codebase.
ArticleMay 2026Measuring the walk27 controlled trials to find out what an AI agent review phase costs, and what it buys. The cost came back clean. The second question turned out to be unanswerable by this design — and establishing that took more work than the cost model did.
ArticleOctober 2025Five questions for a system you already ownDeciding whether to replace something you built two or three years ago is usually done on instinct — it looks dated, or it looks fine. Five questions that produce evidence instead, and why the honest answer is often to do less than you were about to.
ArticleMarch 2025Seven questions to answer before anyone quotes youMost projects that run over budget, over time and over everyone's patience start from a brief too vague to say what success looks like. Seven questions that need no technical knowledge, and one that most briefs get backwards.
PressJanuary 2025MBSE top achievers shine: how these financial pros thrived with online learningMoonstone Information RefineryMoonstone's write-up of the Higher Certificate in Wealth Management top achievers, on why a director signing for a P&L went and learned the financial side properly.
ArticleJune 2024From spreadsheet to systemA spreadsheet is not a failure — it is the right tool until it isn't. The signs you have outgrown one, the fear that keeps operations on them years too long, and the migration sequence that stops a cutover breaking on a real customer.
ArticleAugust 2023The business that stops when you doLoad shedding made it visible, but it was never the cause. An operation routed through one person's availability has a structural weakness, and the fix is not removing people — it is removing them from the places where they add nothing.
PressMay 2016More shops for Philippi VillageGroundUpGroundUp's report on the Container Walk expansion names the project manager and quotes him on why the precinct was built from containers.
Case study2015—201754 containers in four monthsA R85m IDC-backed retail precinct built from shipping containers in about a third of the time conventional construction would have taken, with an entrepreneur incubation programme running inside it.
Case study2014—2026Turning a seven-entity group cash-flow positiveEleven years with a family-held property group, ending in the executive seat — a restructure into a multi-entity holding, then full P&L across seven entities and 22 assets, from a monthly operating loss to cash-flow positive.
Case study2004—2014A decade inside Dutch law firmsTen years across two firms — a firm-wide system migration at the first, then back-office re-engineering worth €80,000 a year at the second, with the legal-workflow software built end to end and a team of thirteen carried through the change.