https://en.wikipedia.org/wiki/Hysteresis_(economics) "In economics, hysteresis (from Greek ὑστέρησις hysterēsis, from ύστερέω hystereō, "(I) lag behind, come later than") consists of effects that persist after the initial causes giving rise to the effects are removed. Two of the main areas in economics where hysteresis effects are invoked to explain economic phenomena are unemployment and international trade." "For instance, in labor economics hysteresis refers to the possibility that periods of high unemployment tend to increase the rate-of-unemployment-below-which-inflation-begins-to-accelerate, commonly referred to as the natural rate of unemployment or non-accelerating inflation rate of unemployment." "When some negative shock reduces employment in a company or industry, there are fewer employed workers left. As the employed workers usually have the power to influence or set wages, their reduced number incentivizes them to bargain for even higher wages when the economy again gets better, instead of letting the wage stay at the equilibrium wage level, where the supply and demand of workers would match. This causes hysteresis, i.e., the unemployment becomes permanently higher after negative shocks." The point being that the economy is not something to just be switched Off and On. There is hysteresis in the system and its particularly well-documented when it comes to unemployment. When a lot of people are thrown out of work it is difficult for the system to regain equilibrium and there are unemployment and inflation considerations. It doesnt just come back.