Emma Ding on YouTube · Open on YouTube
Experimentation, causal thinking and metric design · Proficient · Lesson 62 of 99 · 11 min video, then about 2 hours of practice
Designing metrics: success, driver and guardrail metrics
After this you can design a metric that is sensitive, attributable and hard to game, and pair it with guardrails that catch harmful side effects.
Why it matters
A good metric moves when the thing you care about moves, is attributable to the team's work, can be measured reliably and is hard to game. Pair every success metric with guardrails (latency, unsubscribes, refunds) that catch wins bought at a hidden cost. Learn Goodhart's law: once a measure becomes a target, people optimise the measure rather than the outcome.
How to use this resource
Success, driver and guardrail metrics explained with product examples.