Journal

Public notes from a private desk.

These essays are written after studio sessions, not before. They name specific failure modes in app analytics. They are not a substitute for Signal Lab, and they are not vendor tutorials.

Planning notebook and laptop on a table
Method · March 2026

Holdout groups without the leftover noise

A 5% holdout still contaminates if your cache key ignores assignment. How we check before anyone trusts the baseline.

 Person working on a laptop by a window
Release · February 2026

When a variant is actually ready

The checklist we use before anyone is allowed to say the words “we can ship this.”

 Bangkok street scene in warm evening light
Thailand · January 2026

Experiment cadence for Bangkok product teams

Store review lags, Songkran freezes, and other calendar facts that dashboards politely ignore.

 Team collaborating around laptops in an office
Instrumentation · December 2025

Metric windows and late-arriving events

SDK retries, offline queues, and why closing a window on Friday night flatters iOS more than Android.