View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Innovation How Might We |  Decision Making Constraint Analysis |  Knowledge Modeling IBIS |  Decision Making Pre-Mortem |
|---|---|---|---|---|
Purposedifferent | With a stuck problem carrying many implicit assumptions, the method translates observations into open, workable questions. It sharpens the problem frame without pre-thinking the solution, turning frustration or fuzziness into a search space with clear direction. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 30–45 min | 30-90 min | 1-3 h | 20–45 min |
Participantsdifferent | 1-10 | 2-8 | 2-8 | Small cross-functional group |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | HMW Questions, Challenge Framing, Idea Prompts | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Issue Map, Positions, Argument Notes | Risk list, Mitigation plan, Assumption log |
Tagsno overlap | FramingOpportunityIdeationQuestions | ConstraintsDecisionPlanningOptions | RationaleKnowledgeDecision | RiskDecisionFailurePlanning |