Vanity Metrics
Etymology
Combines "vanity," self-flattering display, with "metrics," measurements. The phrase was popularized by Eric Ries in his 2011 book The Lean Startup, which contrasted vanity metrics with "actionable metrics" that inform real decisions. The label names a temptation as old as measurement: preferring the number that makes you look good.
noun phrase · /VAN-ih-tee MET-riks/
Numbers that look impressive — total signups, page views, follower counts — but don’t reflect real value, progress, or the health of what you’re measuring.
What it names
A handle for the gap between flattering figures and meaningful ones, and a warning against optimizing for what’s easy to count rather than what actually matters.
Example
Ten million downloads sounds great, but it’s a vanity metric — only four thousand people actually use the app each week.
Related idea
Chasing them is a route to Goodhart’s law: once a flattering number becomes the target, people optimize the number and hollow out the thing it was meant to reflect.