Crisis will always happen, things will always change. That is not in question. It's foolish to just brush everything off and say 'we will be fine, the system will correct itself'. The system will certainly always correct itself, but it's possible to happen upon a crisis that hits so fast, or a sneaky crisis a long time in the making (and requiring too long to fix), that the wrongs cannot be righted before catastrophic damage occurs. (And by catastrophic I mean not a market crash or whatever but nation-, society-, race-, or world-ending)