6 Hat Thinking
Andrew Wrightにより
1. Black
1.1. risks
1.2. downside
1.3. worst case
2. Yellow
2.1. best case
2.2. upside
3. Green
3.1. new ideas
3.2. creativity
4. Blue
4.1. decisions
4.2. actions
4.3. summary
5. Blue
5.1. what's the question?
5.2. explain process
5.2.1. stick to hat