Through this book, we’ll be able to answer these three core questions about a system and a metric:

Question 1: Are we achieving our target or goal?

  • Are we doing so occasionally?
  • Are we doing so consistently?

Question 2: Are we improving?

  • Can we predict future performance?

Question 3: How do we improve?

  • When do we react?
  • When do we step back and improve the system?
  • How can we prove we’ve improved

The aim of this book is not learning how to create charts for our metrics; it’s about improving performance through these methods and these questions.