Laffer curve New Palgrave Dictionary of Economics reports that a comparison of academic studies yields a range of revenue maximizing rates that centers around 70%. In the early 1980s, Edgar L. Feige and Robert T. McGee developed a macroeconomic model from which they derived a Laffer Curve. According to the model, the shape and position of the Laffer Curve depend upon the strength of supply side effects, the progressivity of the tax system and the size of the unobserved economy. Economist Paul Pecorino presented a model in 1995 that predicted the peak of the Laffer curve occurred at tax rates around 65%.
To each according to his contribution that the citizens of a workers' society should be rewarded according to individual contributions, Marx claims that giving them the "full product" of their labor is impossible as some of the proceeds will be needed to maintain infrastructure and so forth. He then explains the nature of a communist society in its lower phase ("socialist society"), which does not emerge from its own foundations "but, on the contrary, just as it emerges from capitalist society; which is thus in every respect, economically, morally, and intellectually, still stamped with the birthmarks of the old society from whose womb it emerges". And