Decisions under uncertainty
Make a defensible decision when evidence is incomplete or conflicting.
What you will learn
- 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.
Core method
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.
- Define the exact decision or claim before analysing detail.
- Use evidence that is relevant to the stated context.
- Record uncertainty instead of replacing it with confident wording.
Applied case
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.
Apply the method
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.
Use in an assessment
Apply the method to the information provided in the task. A strong response makes its reasoning traceable and does not rely on specialist facts that are absent from the evidence.
- Read the requested outcome and constraints first.
- Eliminate responses that exceed the available evidence.
- Review whether the conclusion answers the precise question.