Non-linear impacts

Important concept but sounds abstract. Better shown with examples than named. A river that absorbs pollution until it suddenly cannot; a health system that manages until it collapses; a community that copes until it fragments. The reason 'we managed last time' is a dangerous basis for planning. Small changes in organisational context can produce disproportionately large changes in collective resilience - that is itself a non-linearity.

When things do not get worse gradually but suddenly jump.