Im not entirely convinced it is crisis in general, it is just that many crisises, atleast of the past, left you without much to do but bang. Poor harvest? Well not so much time threshing or grinding nicer flower, or wasting energy going places, or brewing beer, or spending much extra effort. Eat your gruel and bang when you get bored. War going on outside and you ain't a soldier on march? Hide away with someone, get bored and bang. Afraid you might not be alive in a few days or weeks from disease or war, fire, famine, flood, or anything else? Might as well bang, that will still be nice.
