Field notes

Ideas for data you can defend.

Brief, practical writing for product people responsible for trustworthy measurement and consequential decisions.

12 August 2026 · 6 min read

The event taxonomy test: can your team explain every signal?

A practical way to remove noisy tracking and build an event language shared by product, growth, and engineering.

28 July 2026 · 5 min read

Retention is a behavior story, not a single percentage

How useful cohorts expose the moments and habits hidden behind a blended retention curve.

9 July 2026 · 7 min read

Before you run another experiment, check the measurement

Five checks that keep instrumentation gaps and sample-ratio problems from turning tests into false confidence.