In an unhampered economy, monopoly is not a framework distinguishable from “pure” competition. In fact, inefficient monopolies arise only in case of government interventionism.
Proponents of modern monetary theory have come up with their own idiosyncratic definition of savings in support of their theory. But the common usage of the term shows MMT doesn't work the way its supporters think it does.
While collectivism was implied in Sismondi’s idea of a “general interest,” Owen and Fourier offered the first formal expression of full socialist collectivization.
Keynes viewed depressions as something that could naturally plague market economies when total spending was insufficient to support full employment. Only with wise oversight could we hope to achieve steady economic growth.
The new Keynesian recommendation for monetary policy is to “stabilize the growth of aggregate demand.” In plain language this means that the monetary authorities should never stop flooding the economy with paper money.
"History cannot teach us any general rule, principle, or law. There is no means to abstract from a historical experience a posteriori any theories or theorems concerning human conduct and policies."
Price inflation is so difficult to predict, because there are so many moving parts: money supply, demand, money velocity, and supply of goods and services.