A win carries almost no information. Collect the failures first
Every receipt needs five fields: the number, the denominator and window, the context, what changed, and the era. Four fields and it's an anecdote.
Revenue dropped. Is it the creative, the algorithm, or what
The instinct is to name a cause fast. Work the chain in order instead: instrument, traffic, page, checkout, order value, delivery. Stop at the link moved.
Why do my analytics show sessions that were never a real person
About 30% of raw sessions in one test were never a person: prefetchers, scanners, bots. Filter at read time, never collection, with a four-signal check.
A 10.7% click-through rate and zero sales: why clicks lied
15,368 impressions, 1,649 clicks, A$564 spent, zero purchases. The click rate was roughly four times normal and meant nothing without a purchase count.
A script found in a second what a careful reader missed once
53 leaked internal tags across 24 lines, found by a script, after one slipped past a careful reader. Six gates, each failing the build, not just warning.