THE SHORT ANSWER
Ask what choice is actually being made, which options exist, what evidence would distinguish them, what could go wrong, what delay changes, whether the choice is reversible, and what signal would trigger review. Then assign an owner and next action.
Separate the decision from the discussion
‘Should we improve onboarding?’ is too easy to agree with. ‘Which onboarding problem will we address this quarter, for whom, within what constraint?’ creates a decision boundary.
- What decision are we actually making?
- Who owns it, who advises and who is affected?
- What happens if we wait?
- When must the decision be reviewed?
Ask about alternatives before defending one
Include the status quo and a smaller intervention, not only two competing proposals. Ask which evidence matters to the choice and which information would merely be interesting.
| Dimension | Question |
|---|---|
| Evidence | What supports each option, and how reliable is it? |
| Risk | Which failure is most consequential or hard to reverse? |
| Uncertainty | What do we still not know? |
| Reversibility | Can we test this with a bounded commitment? |
| Review | What would make us change course? |
Evidence & context: HM Treasury and Government Finance Function
Questions improve process, not certainty
A long checklist can delay action without improving the choice. Match investigation to consequence and reversibility. Record uncertainty honestly instead of demanding false precision.
Use Building a Personal Decision Framework for the deeper evidence-and-review process, and How Teams Make Better Decisions for roles and participation.
Evidence & context: National Academies of Sciences, Engineering, and Medicine
Write a decision question
Complete: ‘By [date], [owner] must choose among [options] to achieve [outcome], while protecting [constraint]. We will reconsider if [signal].’ Then ask which missing fact is most likely to change the choice.
Sources & further reading
- The Green Book 2026
HM Treasury and Government Finance Function. Current official guidance on objectives, options, evidence, risk, uncertainty, appraisal and evaluation. It is designed for public decisions, while the general reasoning principles are adapted here.
- Reproducibility and Replicability in Science
National Academies of Sciences, Engineering, and Medicine. A consensus report on evidence, uncertainty, transparency, reproducibility and replication. Scientific standards need proportionate adaptation outside research settings.
Examples and exercises are illustrative unless attributed to a source. No independent expert review is claimed.
A correction, a counterexample or an experience worth sharing?
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