What belongs in a feature experiment readout, and what can wait
A readout has a job: help a product squad decide. Charts that do not change that decision can live in an appendix.
Journal
From the desk after someone else’s experiment.
Short pieces on readouts, guardrails, peeking, and the folders product teams actually send us. Written for people who have to decide, not for a general audience of “makers.”
A winning variant can still be the wrong ship
Crossing a threshold on the primary metric is not the same as being ready to give the feature to everyone.
Guardrails without burying the question you actually asked
Guardrail metrics exist to stop a reckless ship, not to give every side chart equal billing in the memo.
How to pack an experiment folder for someone who was not in the room
If an outside reader needs a week of meetings to reconstruct the hypothesis, the folder was not ready.
Peeking, festive weeks, and the sentence the squad needs to hear
Looking early is common. Pretending you did not is what breaks the readout.