- the tools available to help us make decisions (such as the decision tree)
- the information we have at our disposal
- our psychological make-up; our values; the way we use information; the frames we deploy; our memories and how we regard past events
- the organisational contex: corporate values; support systems; the way decisions and their results are analysed and rewarded.
Because being blamed gives rise to negative emotions, and often leads to some kind of sanction or punishment as well, people who make errors tend to blame them on circumstances or events, rather than themselves ('it's not my fault!').
Neither of these all-too-familiar 'natural' perspectives on error is useful in improving the way we make decisions, or the way we respond when things go wrong. Refraining from blame is a crucial part of informed decision making and good management.