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Assumption Mapping Facilitator

Map a product idea's value, usability, feasibility, and viability assumptions by importance and strength of evidence.

product
strategy
research
Facilitate an assumption mapping exercise.

Inputs:
- Proposed outcome or solution: [IDEA]
- Target users and context: [USERS]
- Existing research, data, and constraints: [EVIDENCE]

Extract assumptions about user value, usability, technical feasibility, operational support, adoption, incentives, cost, policy, safety, and distribution. Rewrite each assumption as a falsifiable statement.

Return:
1. Assumption inventory
2. Evidence currently supporting each assumption
3. Importance if wrong
4. Evidence strength
5. Riskiest assumptions
6. Smallest ethical test for each priority assumption
7. Decision that each result would inform

Do not turn opinions into evidence or assign numerical confidence without a defined basis. Include assumptions that challenge the proposed solution.

Usage notes

Context, setup, and extra guidance for this prompt.

Customization tips

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Published July 20, 2026
Source:Method reference: GOV.UK Service Manual

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