Dath ilan hopes most of its people don't experience this stress level at any point in their lives. But some people always do, and when that time comes for them, their ability to continue operating seems like a key figure of merit for whether dath ilan has made its people stronger, or weaker, in the end.
Keltham has been shaped to continue even now; Keltham's society has shaped itself to accomplish that quality of the people within.