Know What's Working

Narrated

Last lesson, you set up monitoring. Now your app is healthy. The dashboard is green. BetterStack hasn’t called you at 3am. Sentry is quiet. Nothing is on fire. By every measure you have, the trip planner is working perfectly.

So last weekend you shipped a new feature. Maybe it was AI photo captions, or a “share this trip with a friend” button — something you’d been thinking about for weeks. You built it, you tested it, you deployed it. It works. You clicked it yourself and it did the thing. Then you closed your laptop and went to bed feeling good.

And here’s the question that should keep you up: did anyone use it?

You have no idea. You genuinely don’t know. Your monitoring tools can tell you the feature didn’t crash. They can tell you the page loaded fast. But they cannot tell you whether a single human being clicked that button. For all you know, you spent a week of your life building something that zero people have touched.

This is a different kind of blindness from the one we fixed last lesson. Monitoring answers the question “is my app up, and did it break?” That’s a yes-or-no, healthy-or-sick question. But there’s a second question, and it’s the one that actually decides whether your product lives or dies: “are people using it, and is it working for them?”

Think about everything you can’t currently see. When someone lands on your homepage, do they start creating a trip — or do they leave immediately? Of the people who start creating a trip, how many actually finish and generate one? How many give up halfway? Which feature do people love and use every day? Which feature did you sweat over that nobody touches? Do users come back the next week, or was it a one-time visit?

Right now, every decision you make about your product is based on vibes. You build what feels right. You guess what users want. You ship features and hope. And hope is not a strategy.

The professionals don’t guess. They measure. Every meaningful action a user takes gets recorded, and that data tells them exactly what’s working and what isn’t. They don’t wonder if a feature is used — they look. They don’t argue about where users drop off — they have the number. This lesson is about giving yourself that same superpower. After this, you stop flying blind.