Voices

Not every note is glowing. The useful ones rarely are.

These remarks refer to rooms that exist on this site: Cohort Instrumentation, Funnel Forensics, and the house readout template.

Person presenting charts during a meeting

★★★★☆

“Week five of Cohort Instrumentation made us freeze the activation cohort at day seven. Growth still tries to reopen it. At least we now have a dated paragraph to point at.”

Nadia Okonkwo · analytics lead, Bristol

Tom, Glasgow. The Field Notes PDF is denser than I wanted for evening reading, but the event pattern called “hesitation before pay” named something our checkout had been doing for months.

First name and city only

“I came for Funnel Forensics and left arguing with my own funnel. The drop after onboarding was not a UX failure; it was a double-counted event. Slightly humiliating. Correct.”

Client in digital banking

★★★★★

Posted after the March open room. “The marked readout on retention cartography is now the template our PM reviews copy. Still wish there was a weekday daytime cohort; evenings with childcare were a stretch.”

Platform-style note · Open Cohort

Case notes

A mobility app that had three definitions of “trip”

Private Atelier · six sessions

The company counted a trip when a ride was requested, when a driver accepted, and when the vehicle moved. Board slides mixed the three. In the atelier we mapped each definition to a decision: operations needed accepts; finance needed completed journeys; product needed requested trips that failed to match.

App Analytics was not the villain. The event stream was rich. What was missing was a sentence, owned by a named person, for each chart. After session four the weekly pack opened with those sentences. Match rate stopped being reported as “trips,” which lowered a vanity number and ended a quarterly argument.

They did not buy more tooling. They deleted two dashboards.

A language-learning app and a rotting taxonomy

Open Cohort alumna, then a short desk enquiry

She arrived with 220 events, many of them screen names from a 2021 redesign. During Cohort Instrumentation she cut the live set to 41, using the house pattern list as a blade, not a shopping catalogue.

The reservation she wrote in her final readout still sits in our teaching file: the data warehouse lagged two days, so same-day experiments were theatre. We agreed. The programme does not fix pipeline latency, and pretending otherwise would have been a prettier lie.