This book is a companion to "Trying Hard Is Not Good Enough," (10th anniversary edition, 2015), which presents a data-driven decision making framework known as Results-Based Accountability (RBA) or Outcomes-Based Accountability (OBA). The framework has been used across the US and in numerous countries around the world. In this volume, Mark shares some of his writing from the last 10 years, and selected writings from the many friends and colleagues...