All crisis are consequences of wrong decisions or displaced behaviour, symptoms showing that something went wrong somehow in the system. Crisis are therefore sometimes the best opportunities -and maybe the only one- to realise that the way we have been following was a dead end. The last economical crisis that shake the world for a couple of years is a wake up call. A signal, send to our brains like a headache, or a stomachache when we wake up after a crazy night of excess.
Modern societies went too far, we went too far, pushing our greediness over the limits of nature. Growth, richness, competition, wars, hunger, injustices, unhappiness...new sets of values founded some hundreds years ago that we still sustain today without thinking too much about the real consequences...