Supply-side economics be the case. Paul Samuelson called this notion "the tape worm theory—the idea that the way to get rid of a tape worm is [to] stab your patient in the stomach". There is frequent confusion on the meaning of the term "supply-side economics" between the related ideas of the existence of the Laffer Curve and the belief that decreasing tax rates can increase tax revenues. Many supply-side economists doubt the latter claim while still supporting the general policy of tax cuts. Economist Gregory Mankiw used the term "fad economics" to describe the notion of tax rate cuts increasing revenue in
To each according to his contribution concept also formed the basic definition of socialism for its pre-Marxist proponents, including Ricardian socialists, classical economists, and individualist anarchists. "To each according to his contribution" was a concept espoused by many members of the socialist and labor movement. Examples of this can be found from Ferdinand Lassalle's and Eugen Dühring's statements to Leon Trotsky's writings. However, it was Vladimir Lenin, inspired by Marx's writing on the subject in his "Critique of the Gotha Programme", who claimed the principle to be a fundamental element of socialism within Marxist theory. Libertarian socialist thinkers, such as American anarchist Benjamin Tucker, defined socialism