When faced with a bad outcome, or the potential for one, we assume that the acts leading up to it must have been equally bad. This is the illusion of cause-consequence equivalence: we tend to believe in a fair world, where causes and effects are proportional.

The Field Guide to Understanding 'Human Error'

Sidney Dekker

The thing to remember here, is most times, we are immersed in complex systems, ones where the simple cause-effects models don't really apply.

In these systems, many factors can influence the outcomes, and one cannot simply use cause-consequence models and methods to analyse failures.

It is human nature to want to find easy, simple explanations to problems. But sometimes, doing so, can lead us to fix the wrong things.