Decisions under uncertainty
Make a defensible decision when evidence is incomplete or conflicting.
Covered in this guide
- Separate known facts from estimates.
- Assess reversibility, impact and information value.
- Define a review point before acting.
Waiting for certainty can be as damaging as acting too quickly. A sound decision records what is known, what is uncertain, the cost of delay and whether the action can be reversed.
Decide with the gap in view
Waiting for certainty can be as damaging as acting too quickly. A sound decision records what is known, what is uncertain, the cost of delay and whether the action can be reversed.
A plan that hid the missing data
A university team must choose whether to extend an application deadline after a regional network outage. The number of affected applicants is not yet confirmed, but the existing deadline expires in four hours.
Try this
Recommend an action and explain what should be monitored after the decision.
Review answer guidance
A short, clearly communicated extension is proportionate because the decision is reversible and reduces the risk of unfair exclusion. Record the evidence for the outage, notify all applicants consistently, monitor affected regions and review whether further adjustment is needed when reliable counts arrive.
Uncertainty on the assessment
State what you know, what you do not, and the reversible next step. Confidence language does not fill a hole in the evidence.