I think it helps to throw away the abstractions and think about people and situations. Let's say there is a restaurant on a street corner. They have good food,

I think it helps to throw away the abstractions and think about people and situations. Let's say there is a restaurant on a street corner. They have good food, people enjoy the vibe there and the decor is tasteful. Half a year a go they employed 15 people and the owner made a modest profit. Now guests have stopped coming. But rent is still due and so are wages. If somehow political leaders had the time to micro-manage what should they do about this situation? Should it stand empty so it's ready start serving people immediately as soon as corona situation is resolved? Should furniture be put in storage and the space be reused for something else in the mean time? Should the restaurant disappear to make room for something else? The employees should they be on standby? Or take on different roles while they wait? And then having answered that question we can take the abstractions back, and ask how the outcome can be approximated by manipulating interest rates and helicopter money.