Journal

Notes we would still defend in a review

These are not recaps of Readout Craft. They are arguments we keep having with alumni.

12 min · peeking

Peeking and the false lift

A Friday screenshot is not a stopping rule, even when the dashboard is green.

9 min · metrics

Trial, paid conversion, and refunds in one tree that a PM can actually hold.

11 min · releases

When 100% rollouts still need a quiet group that never saw the new tab bar.

8 min · CUPED

Covariates that help, covariates that are just the same metric in a wig.