Laffer curve at an intermediate rate of taxation, and then falls again to zero revenue at a 100% tax rate. However, the shape of the curve is uncertain and disputed among economists. Under some assumptions, such as revenue being a continuous function of the rate of taxation, the maximum illustrated by the Laffer curve is a result of Rolle's theorem, which is a standard result in calculus. One implication of the Laffer curve is that reducing or increasing tax rates beyond a certain point is counter-productive for raising further tax revenue. A hypothetical Laffer curve for any given economy can only be
To each according to his contribution to his needs". Lenin wrote "The State and Revolution" to answer all the burning questions of the movement, and to prevent Marxism from becoming tainted by "opportunists" and "reformists", as he called them. The work is very important as it categorizes the "first phase of communist society" as socialism, with the higher phase being communism proper. The pamphlet also answers all questions and concerns of the Marxists of his time by utilizing the classic works of Marxism. When he is set to describe socialism and its economic features he turns to the authority of Marx, especially the "Critique of the