Focusing on the Efficiency-Thoroughness Trade-Off (ETTO), this series explores the systemic causes of how rational field adjustments turn into hazards and provides practical strategies for designing robust safety management systems.
Why More Information Leads to Faster, Rougher Decisions | ETTO Principle Efficiency Thoroughness Ch.2-3 SAFETY MANAGEMENT · CHAPTER 2 · PART 3/5 Why More Information Leads to Faster, Rougher Decisions Chapter 2-3 · Information Pull and Push · Descriptive Decision…
ETTO Is Not an Excuse for Trade-Offs — It Is the Operating Logic of Survival | ETTO Principle Efficiency Thoroughness Ch.2-2 SAFETY MANAGEMENT · CHAPTER 2 · PART 2/5 ETTO Is Not an Excuse for Trade-Offs — It Is the…
Why the Rational Human Model Fails to Explain the Field | ETTO Principle Efficiency Thoroughness Ch.2-1 SAFETY MANAGEMENT · CHAPTER 2 · PART 1/5 Why the Rational Human Model Fails to Explain the Field Chapter 2-1 · The Rational Human…
Why Success and Failure Share the Same Root | ETTO Principle Efficiency Thoroughness Ch.1-4 SAFETY MANAGEMENT · CHAPTER 1 · PART 4/4 Why Success and Failure Share the Same Root Chapter 1-4 · The ETTO Principle in Practice · Changing…
Why We Need Simple Explanations and the ETTO Trade-Off | ETTO Principle Ch.1-3 SAFETY MANAGEMENT · CHAPTER 1 · PART 3/4 Why We Need Simple Explanations — and the ETTO Trade-Off Chapter 1-3 · A Need for Simple Explanations ·…
Why We Stop at the First Explanation | ETTO Principle Incident Investigation Ch.1-2 SAFETY MANAGEMENT · CHAPTER 1 · PART 2/4 Why We Stop at the First Explanation Chapter 1-2 · A Need for Certainty · The Stop Rule Where…
Why We Still Need to Understand “Why Things Fail” | ETTO Principle Ch.1-1 SAFETY MANAGEMENT · CHAPTER 1 · PART 1/4 Why We Still Need to Understand “Why Things Fail” Chapter 1-1 · Safety Requires Knowledge To genuinely apply the…
SAFETY MANAGEMENT · OVERVIEW Rethinking Safety Management Through the ETTO Principle Why “Well-Running Systems” Fail Without Warning — and What to Change First on the Floor The ETTO Principle (Efficiency-Thoroughness Trade-Off), introduced by Erik Hollnagel in 2009, frames every operational…
