Reports · Process

Two covers is not a trend

Our speed board refuses to call anything a problem until it has three measurements of it. That floor is not pedantry — it is what stops a quiet Tuesday rewriting the menu.


The board that watches page speed has a rule that looks fussy written down: a page is not counted as over budget until there are at least three measurements of it on the version currently running. Two slow loads are recorded, shown, and deliberately not treated as a finding.

We have been glad of that rule most days this month. Overnight, almost nothing gets opened. The board frequently has one or two loads in it — and one load can be somebody on a train, or a phone waking up, or a crawler. Acting on it would mean rebuilding a screen because of one person's tunnel.

The same floor belongs on your own numbers

Every venue has a version of this. A dish sells two on a wet Tuesday and somebody suggests dropping it. A vendor has one bad hour and the hall manager starts a conversation about the pitch. A new sign goes up on Thursday and by Saturday it is credited with the weekend.

None of those are wrong instincts. They are just claims with a sample of one or two behind them, and the cost of being wrong is not symmetrical: putting a dish back after you cut it is far harder than leaving it one more week.

Write the floor down before you need it

The reason ours works is that the number was chosen in advance and applies to every page equally. A threshold argued out after seeing a result you dislike is not a threshold, it is a negotiation.

Pick yours in the calm: how many services before a dish's numbers count, how many weeks before a trading pattern is a pattern, how many complaints before a process changes. Then when the quiet Tuesday arrives, the answer is already written and nobody has to win an argument to hold the line.

And say which it is

The other half of the rule: when the sample is too small, the board says so rather than showing a blank. "Not measured yet" and "measured and fine" look identical on most dashboards, and they are opposite facts. A report that cannot tell you which one you are looking at will eventually be read as the reassuring one.


Try it on tonight’s service.

Nothing to install, no card. Not better by the weekend? Close the tab.