Laffer curve costs). Although tax policy is often mentioned in relation to supply-side economics, supply-side economists are concerned with all impediments to the supply of goods and services and not just taxation. In their economics textbook "Principles of Economics" (7th edition), economists Karl E. Case of Wellesley College and Ray Fair of Yale University stated "The Laffer curve shows the relationship between tax rates and tax revenues. Supply-side economists use it to argue that it is possible to generate higher revenues by cutting tax rates, but evidence does not appear to support this. The lower tax rates by the Reagan administration decreased
From each according to his ability, to each according to his needs if any member of society has an unsatisfied need, each member has a duty to produce its object (if they can). But that is precisely what the principle ‘from each according to their abilities, to each according to their needs!’ dictates. In Marx’s vision, the basic principle of developed communism is a principle of solidarity in respect of need.' Marx delineated the specific conditions under which such a creed would be applicable—a society where technology and social organization had substantially eliminated the need for physical labor in the production of things, where "labor has become not only a means of