In plain English
A measurement that looks impressive but is not meaningfully connected to a goal, decision or explanation.
Why it matters
This instrument can help answer a focused measurement question when it is connected to a real objective and read alongside relevant context.
Example
A small organisation records this signal for a defined page and period, then compares it with related instruments before deciding whether to investigate a change.
Common misunderstanding
The same measurement may be useful in one context and vanity in another; the deciding factor is how it informs the real goal.