Erik Hollnagel

Ph.D., Professor, Professor Emeritus


A semi-chronological list of (good?) ideas that I have had the opportunity to work on and/or contribute to.

Cognitive Systems Engineering (with David D Woods)

The ‘no’ view of human error

GMTA (Goals-Means Task Analysis)

Phenotypes and genotypes (of erroneous actions)

CREAM (Cognitive Reliability and Error Analysis Method)

COCOM (Contextual Control Model)

ECOM (Extended Control Model)

Resilience Engineering (with David Woods and others)

The ETTO Principle

FRAM (the Functional Resonance Analysis Method)

  • The FRAM has its own web page here.
  • The FRAMily also has its own group on LinkedIn.

RAG (the Resilience Analysis Grid)

Resilient Health Care Net

  • An introduction to Safety-I and Safety-II can be found here.
  • And of course in the book.

Safety Synthesis

  • Safety Synthesis has its own web page here.