4-PLAYER Model (David Kantor)

인간 시스템의 4가지 행동
1. 선두자 Mover : Making a case for
2. 추종자 Follower : Agree with the case
3. 반대자 Opposer : Making a case against
4. 관찰자 Bystander : Asking "Why are we talking about this"