Journal

Letters on behaviour

Occasional pieces from the Kirktown desk. They are arguments, not vendor tutorials. Dates are when the letter left the studio, not when a platform last changed a button.


Notebook and fountain pen on a dark desk

12 May 2026

Naming events that survive a rebrand

Marketing will change the product’s public name. Your stream should not have to.

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Laptop with code in a dim room

4 March 2026

Why DAU misleads subscription apps

Opening the app is not the same as remaining a customer. The slide rarely admits it.

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Two people reviewing a document on a screen

21 January 2026

Cohort windows for UK fintech

Payday, Faster Payments, and bank holidays are not rounding errors. They are the window.

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Hands writing beside a laptop and coffee

9 November 2025

The property dictatorship

A budget for fields is unfashionable. It is also the only way a dictionary stays a dictionary.

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Developer looking at code on a monitor

18 August 2025

Session replay is not analytics

A sampled video can answer a question. It cannot be the question.

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