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 Brainstorming |  Decision Making Constraint Analysis |  Decision Making Pre-Mortem |  Innovation Reverse Brainstorming |
|---|---|---|---|---|
Purposedifferent | When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. | 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. | 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. | For persistent errors or blockages, the method shifts the view to the opposite of the desired effect. It exposes the mechanics of failure and makes hidden causes easier to grasp. This makes improvement more concrete and the problem clearer. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 30-60 min | 30-90 min | 20–45 min | 30-60 min |
Participantsdifferent | 4-12 | 2-8 | Small cross-functional group | 3-12 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Idea pool, Theme clusters, Shortlist | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Risk list, Mitigation plan, Assumption log | Reverse Ideas, Risk Themes, Solution Ideas |
Tagsno overlap | BrainstormingIdeationCreativityWorkshopDivergence | ConstraintsDecisionPlanningOptions | RiskDecisionFailurePlanning | BrainstormingIdeationCreativityRisk |