John

“Planning and doing are separate parts of the same job; they are not separate jobs. There is no work that can be performed effectively unless it contains elements of both. One”
― Peter F. Drucker, The Practice of Management

“Not being able to find a cause is profoundly distressing; it creates anxiety because it implies a loss of control. The desire to find a cause is driven by fear.”
― Sidney Dekker, Just Culture: Balancing Safety and Accountability

“In accident investigation, as in most other human endeavours, we fall prey to the What-You-Look-For-Is-What-You-Find or WYLFIWYF principle. This is a simple recognition of the fact that assumptions about what we are going to see (What-You-Look-For), to a large extent will determine what we actually find (What-You-Find). (The principle is furthermore not limited to accident investigation, but applies to human perception and cognition in general.) In accident investigations, the guiding assumptions are sometimes explicit, for instance when they are given as a directive or objective.

Erik Hollnagel. The ETTO Principle: Efficiency-Thoroughness Trade-Off (Kindle Locations 998-1000). Kindle Edition.”
― Erik Hollnagel, The ETTO Principle: Efficiency-Thoroughness Trade-Off

“Saying what people failed to do has no role in understanding ‘human error.”
― Sidney Dekker, The Field Guide to Understanding 'Human Error'