Differences between Sustainability and Resilience

Hunt for Module 4: Professor Meerow discussed differences between Sustainability and Resilience. Two such differences were the concepts of “fail-safe” vs. “safe-to-fail” and “maximizing efficiency” vs. “maximizing adaptive capacity”. Can you think of one specific example from your everyday experiences with the design/operation of your city that illustrates these differences?
Provide either documentation of a catastrophic failure or a well-designed adoption which established Sustainability and Resilience. Provide links if necessary.