It seems that an essential condition for crises is to be found in the existence of a highly developed system of communications and the spreading of a homogenous mentality over vast areas.But when the hour and the right material are at hand, the contagion spreads with the speed of electricity over hundreds of miles, and affects the most diverse populations, which hardly know each other. The message flies through the air and they all suddenly agree on that one issue, if only a sulky admission that "there's got to be a change.".

Jakob Burckhardt