* [ ] 15 Opens through **Input** - Environment, Resources (Energy, Matter, Information)
* [ ] 16 Opens through **Output** - Product (Energy, Matter, Information)
* [ ] 17 **Influenced from Inside** - VSM Sys 3, **Agency Inside**
* [ ] 18 **Influenced from Outside** - VSM Sys 4, **Agency Outside**
See Vester's Sensitivity Model for overview.