Metrics Lie When You Stop Asking Why
Numbers feel objective, which is exactly why they are so easy to misread. A metric without a question behind it will lead you somewhere confidently wrong.
Dashboards give a comforting sense of control. The line goes up, the team celebrates, the line goes down, the team worries. But a number on its own carries no meaning. It only becomes useful when it is answering a question you actually care about.
Every metric is a proxy
You cannot measure whether people love your product. So you measure retention, or session length, or repeat visits, and treat those as stand-ins. That is fine, until you forget they are stand-ins and start optimizing the proxy itself. Longer sessions can mean people are engaged. They can also mean people are lost.
Pair every number with its counterweight
A single metric can almost always be gamed. Speed can be bought with quality. Growth can be bought with churn. Watch metrics in tension with each other so that improving one at the expense of another shows up instead of hiding.
If you cannot say what decision a metric would change, you are not measuring. You are decorating.
Go back to the story
When a number moves, resist the urge to explain it from your chair. Watch a few real sessions. Read the support tickets. The metric tells you that something changed. Only the story tells you what and why, and the why is the part you can actually act on.
Measure to understand, not to reassure. A metric is a question, not an answer, and the moment you stop asking why, it starts quietly lying to you.