Problem Name
Problem type
Problem type
What do you know?
Fact
What don't you know?
Unknowns
What assumptions are you making?
Assumption
Solution criteria
Criterion
Root cause analysis
Cause
Cause
Cause
Cause
Cause
Impact analysis
Person
Impact
Six serving men
What?
What?
What not?
What not?
Why?
Why?
Why not?
Why not?
When?
When?
When not?
When not?
How?
How?
How not?
How not?
Where?
Where?
Where not?
Where not?
Who?
Who?
Who not?
Who not?
Analogies
What is it like?
Be the problem
Insight