When cohorts lie with a straight face
A cohort is a promise about who is in the room. Here is how that promise quietly changes mid-quarter.
Journal
Margins from the marking desk.
These pieces are written after studio weeks, not before them. They assume you already own an app and a warehouse that occasionally disagrees with itself.
Session replay is not a strategy
Watching users tap is a privilege. It is not a substitute for an event you can count twice.
Reading D1 without panic
First-day return is a weather report. Treat it like a climate model and you will make frantic product.
Paywall telemetry after review
What you may still record once legal and store review have had their turn — and what you must stop pretending is an event.