Journal

Field notes from the map table


Short essays from teaching, not recaps of vendor keynotes. Each piece belongs to a problem we keep seeing in App Analytics work.

Monitor filled with overlapping data charts

11 March 2026 · Telemetry

Reading event noise without drowning

Volume is not a signal. A method for sitting with a noisy stream until a few names earn the right to be on a readout.

Line chart on a laptop in low light

22 January 2026 · Cohorts

Retention is not a number

Why a single percentage behaves like a slogan, and how weather language keeps a product meeting honest.

Smartphone and notebook on a dark desk

4 November 2025 · Funnels

When funnels lie in public

Screens mistaken for jobs, duplicated SDK steps, and the slide that should have been a bug ticket.