Core question, decision authority, and scope are clear.
Decision Jam
A practical method guide: clarify prerequisites and materials, understand the complete process, and look up outputs, pitfalls, and stop criteria.
Prerequisite
What needs to be finished first
Affected domain and user perspectives are represented.
Preparation
What needs to be ready before start
LDJ decision board, timer, notes, and decision log.
Facilitator · decider · 3–8 affected participants
Collect existing evidence and constraints in advance.
60–90 minutes
Prepare the canonical blank structure and make timeboxes visible.
Core question
The one question this method answers
Which most important problem will we address with which solution as the next experiment?
Flow
Phases with goal, actions, output and pitfall
AJ&Smart's Lightning Decision Jam separates silent problem notes, dot voting, HMW reframing, silent solutions, another vote, effort-impact decision, and test planning. The decider resolves ties.
LDJ decision board
Fictional LDJ run
The complete LDJ flow remains visible in distinct columns.
Silent problems
Example 1
Ownership unclear after reviews; actions stall.
Top priority
Example 2
Six votes; decider selects ownership gap.
HMW
Example 3
How might we visibly confirm ownership at closure?
Silent solutions
Example 4
Owner confirms card; closure shows missing owners; auto-reminder.
Effort/impact
Example 5
Owner confirmation: high impact, low effort.
Test
Example 6
Two reviews; ≥80% within 24 h; no longer review duration.
- Silent problems
- Keep the timebox; evaluate content only in the designated step.
- Top priority
- Keep the timebox; evaluate content only in the designated step.
- HMW
- Keep the timebox; evaluate content only in the designated step.
- Silent solutions
- Keep the timebox; evaluate content only in the designated step.
- Effort/impact
- Keep the timebox; evaluate content only in the designated step.
- Test
- Keep the timebox; evaluate content only in the designated step.
- 1
Problems
Problems

Goal
Produce problem wall so “Which most important problem will we address with which solution as the next experiment?” can be answered with evidence.
Inputs for this step
- Concrete work context
Actions
- Write problems silently, read them out, and collect without debate.
- Mark evidence, assumption, and open question directly.
Output
problem wall
problem wall with evidence, owner, and next decision.
Quality check
Are problems concrete and solution-free?
Pitfall
Discussion begins before silent collection is complete. Restart the timer and complete silently.
Timing: 10–20 minutes
- 2
Priority
Priority

Goal
Produce top problem so “Which most important problem will we address with which solution as the next experiment?” can be answered with evidence.
Inputs for this step
- problem wall
Actions
- Run dot voting and let the decider resolve ties.
- Mark evidence, assumption, and open question directly.
Output
top problem
top problem with evidence, owner, and next decision.
Quality check
Is exactly one problem selected for the next step?
Pitfall
Votes are treated as consensus or proof. Document authority and minority concerns.
Timing: 10–20 minutes
- 3
HMW question
HMW question

Goal
Produce HMW question so “Which most important problem will we address with which solution as the next experiment?” can be answered with evidence.
Inputs for this step
- top problem
Actions
- Reframe the top problem positively and solution-neutrally as How Might We.
- Mark evidence, assumption, and open question directly.
Output
HMW question
HMW question with evidence, owner, and next decision.
Quality check
Does the question allow several solutions?
Pitfall
The HMW question already contains the favourite feature. Remove solution nouns and name desired impact.
Timing: 10–20 minutes
- 4
Solutions
Solutions

Goal
Produce solution portfolio so “Which most important problem will we address with which solution as the next experiment?” can be answered with evidence.
Inputs for this step
- HMW question
Actions
- Sketch solutions silently, vote, and choose top ideas.
- Mark evidence, assumption, and open question directly.
Output
solution portfolio
solution portfolio with evidence, owner, and next decision.
Quality check
Are solutions concrete enough for effort/impact?
Pitfall
Verbally promoted ideas win through presentation skill. Equalise explanation time and vote on the note.
Timing: 10–20 minutes
- 5
Effort/impact
Effort/impact

Goal
Produce experiment card so “Which most important problem will we address with which solution as the next experiment?” can be answered with evidence.
Inputs for this step
- solution portfolio
Actions
- Place top solutions on effort/impact and plan a test with a threshold.
- Mark evidence, assumption, and open question directly.
Output
experiment card
experiment card with evidence, owner, and next decision.
Quality check
Does the experiment define behaviour, threshold, and guardrail?
Pitfall
The winner becomes an implementation project immediately. Test small first and preset the next decision.
Timing: 10–20 minutes
Artifact
What comes out at the end
Sketch: what the artifact looks like
Versioned LDJ decision board with sources, assumptions, and next step.
Retain date, scope, sources, assumptions, and decision for each version.
- LDJ decision board
- timer
- decision log
decision-jam-working-template.md
Plan the session around the canonical method steps and a concrete decision.
Decision Jam: Worksheet
Question
To be confirmed
Desired outcome
To be confirmed
Scope
Full session Time: 60–90 minutes
Complete this worksheet on paper or in your own document during the work.
Preparation for this scope
Method setup
- Materials: LDJ decision board, timer, notes, and decision log.
- Roles: Facilitator · decider · 3–8 affected participants
- Advance information: Collect existing evidence and constraints in advance.
- Overall time needed: 60–90 minutes
- Setup: Prepare the canonical blank structure and make timeboxes visible.
Prepare for the work steps
Problems: Problems
- Concrete work context
Priority: Priority
- problem wall
HMW question: HMW question
- top problem
Solutions: Solutions
- HMW question
Effort/impact: Effort/impact
- solution portfolio
LDJ decision board
Silent problems
...
Top priority
...
HMW
...
Silent solutions
...
Effort/impact
...
Test
...
Working policies
Silent problems ...
Top priority ...
HMW ...
Silent solutions ...
Effort/impact ...
Test ...
AJ&Smart: Lightning Decision Jam
Problems: Problems
Expected artifact: problem wall
problem wall with evidence, owner, and next decision.
Entry:
...
- Are problems concrete and solution-free?
Priority: Priority
Expected artifact: top problem
top problem with evidence, owner, and next decision.
Entry:
...
- Is exactly one problem selected for the next step?
HMW question: HMW question
Expected artifact: HMW question
HMW question with evidence, owner, and next decision.
Entry:
...
- Does the question allow several solutions?
Solutions: Solutions
Expected artifact: solution portfolio
solution portfolio with evidence, owner, and next decision.
Entry:
...
- Are solutions concrete enough for effort/impact?
Effort/impact: Effort/impact
Expected artifact: experiment card
experiment card with evidence, owner, and next decision.
Entry:
...
- Does the experiment define behaviour, threshold, and guardrail?
Open questions and next steps
...
Method guide: https://methodatlas.meierhoff-systems.de/en/methods/decision-jam/run-sheet
Example output
Concrete filled scenario, fictional example
Fictional example for orientation. Counts and timings describe this case and are not universal requirements.
decision-jam-beispiel.md
Concrete filled scenario, fictional example
Fictional example: problem 'after reviews it is unclear who owns each action' receives six votes. HMW: how might we visibly confirm ownership at closure? Solution 'owner confirms the card before closure' receives five votes and sits at high impact/low effort. Test: two reviews, success ≥80% confirmed owners within 24 hours, guardrail no increase in review duration.
Pitfalls
Recognize symptoms and steer against them
Quick overview, the full text is in the matching phase in the flow
- ProblemsDiscussion begins before silent collection is complete.View in phase
- PriorityVotes are treated as consensus or proof.View in phase
- HMW questionThe HMW question already contains the favourite feature.View in phase
- SolutionsVerbally promoted ideas win through presentation skill.View in phase
- Effort/impactThe winner becomes an implementation project immediately.View in phase
Problems
Discussion begins before silent collection is complete.
Restart the timer and complete silently.
Priority
Votes are treated as consensus or proof.
Document authority and minority concerns.
HMW question
The HMW question already contains the favourite feature.
Remove solution nouns and name desired impact.
Solutions
Verbally promoted ideas win through presentation skill.
Equalise explanation time and vote on the note.
Effort/impact
The winner becomes an implementation project immediately.
Test small first and preset the next decision.
Stop criteria
When to pause, resolve prerequisites, or choose another approach
Finished the method guide?
Go to the profile for purpose, similar methods, and sources or continue to the next method in the catalog.

