It is crucial to establish the key feedbacks regulating, or destabilizing, each safety variable, and how they interact on different timescales. To quantitatively assess and combine these feedbacks, an established but under-used approach of calculating and combining feedback “gain” factors (Lashof, 1989) can provide a useful framework.
!- Feedback Gain Factors : used to assess and combine feedbacks - this helps establish the key feedbacks regulating or destabilizing safety variables