Much more than a technical book. Erik’s work is a well documented journey into the multiple interactions between safety, work and human nature. A timely contribution to vindicate human beings and their variability from the one sided focus on the evils of human error. A groundbreaking look at ‘the other story’ that will certainly contribute to safer and more productive workplaces. Dr Alejandro Morales, Mutual Seguridad, Chile Safety needs a new maturity. We can no longer improve by simply doing what we have been doing, even by doing it better. DR Hollnagel brings forth new distinctions, interpretations, and narratives that will allow safety to progress to new unforeseen levels. Safety-II is more than just incident and accident prevention. A must read for every safety professional. Tom McDaniel, Global Manager Zero Harm and Human Performance, Siemens Energy, Inc., USA