Laffer curve Office has estimated that extending the Bush tax cuts of 2001–2003 beyond their 2010 expiration would increase deficits by $1.8 trillion over the following decade. Economist Paul Krugman contended that supply-side adherents did not fully believe that the United States income tax rate was on the "backwards-sloping" side of the curve and yet they still advocated lowering taxes to encourage investment of personal savings. Supply-side economics indicates that the simple descriptions of the Laffer curve are usually intended for pedagogical purposes only and do not represent the complex economic responses to tax policy which may be observed from such viewpoints
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