Resilience measures the degree of shock needed to cause a perturbation. Agility measures avoidance of perturbation. Resiliency measures recovery from perturbation.
“Resiliency” has been similarly defined by resiliency.com
Resiliency is the ability to spring back from and successfully adapt to adversity.
Resiliency is a function of perturbation and is measured in production-factors and time. That is, the concept of “resiliency” only makes sense in the context of the set-back or disaster. So for example, New Orleans may have had very high resiliency against category four hurricanes, but very little resiliency against Katrina-class hurricanes.
Resiliency is a two-dimensional (or co-ordinational) number, with one ordinate measuring time to recovery and the other measuring the amount of labor, capital, and land needed to recover. For instance, say your house burns down and you are cash-rich but uninsured— your resiliency factor may be very good in time but very bad in resources (you can buy a new house in cash, but it will take a significant portion of your resources). Alternatively, take another person who may be cash-poor but well insured. His resiliency would be poor on the time-axis (because he would have to wait for the insurance check to arrive) but very good on the resources side (if the house is insured for replacement value, he may actually earn on the disaster).
Green has gone time-resiliency but Red has more resource-resiliency. How can we tell who has more resiliency?
A draw-back of a two-dimensional measure of resiliency is that it is hard to say which person would have more or less “resiliency.” Because different people will have different indifferent curves. For instance, under depending on indifferent curves used, each of these people may have greater resiliency!
Both Green and Red are on the good side of their private resiliency curves, but how can we tell who has more resiliency?
A single, objective measure of resiliency can be gained by determining a resiliency-value along each point from the resource-intercept (which is determined by how much time-resiliency someone has if he has zero resource-resiliency) and the time-intercept (which is determined by how much resource-resiliency someone has if he has zero-time resiliency). Then, take the area, and you have someone’s (or some organization’s) resiliency number. While one’s resiliency preference may be different from another, a researcher can now measures someone’s total resiliency.
Similarly, when Enterra CEO Stephen DeAngelis discusses “degrees of resiliency” among Muslim charities, the above definition of resiliency gives us a straight-forward way to objectively compare resiliency among Islamic responders.
Of course, why resiliency should be measured is a question for another time…