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Body of Knowledge · Glossary

Costly moment

A situation in which a stated value and the pressure of the moment point in different directions, and people are watching the decision. Culture is set in these moments. A value that holds only when it costs nothing is decoration.

Where the standard develops it

Related terms

Accountability without fear
Clear ownership and honest consequences for patterns of unaccountability, combined with real safety for honest error.
Blameless postmortem
An incident review that asks how the system allowed the failure and what to change, rather than who to blame.
Brilliant jerk
A high performer whose behaviour breaches the team's values.
Culture
The accumulated pattern of what behaviour gets rewarded, tolerated and punished in practice.
Error budget
The tolerable shortfall against a service-level objective, treated as a resource to spend that gates risk-taking.
Learning zone
The combination of high psychological safety and high standards.
Psychological safety
A shared belief that the environment is safe for interpersonal risk-taking, such as admitting error, asking questions and challenging.

Engineering Management Academy. (2026). Costly moment. In Engineering Management Academy Body of Knowledge (Version 3.1, GLO.costly-moment). https://www.engineeringmanagement.academy/body-of-knowledge/glossary/costly-moment