Economic policy of the George W. Bush administration finance Social Security and Medicare benefits as well as investments in schools, health, infrastructure, and basic research... [and] generate further inequalities in after-tax income." The Bush administration had claimed, based on the concept of the Laffer Curve, that the tax cuts actually paid for the themselves by generating enough extra revenue from additional economic growth to offset the lower taxation rates. However, income tax revenues in dollar terms did not regain their FY 2000 peak until 2006. Through the end of 2008, total federal tax revenues relative to GDP had yet to regain their 2000 peak. When asked whether the
Ibn Khaldun scholars is increasingly common. Influential British historian and international affairs specialist Arnold J. Toynbee has called Ibn Khaldun's Muqaddimah "the greatest work of its kind." Ernest Gellner, once a professor of philosophy and logic at the London School of Economics, considered Khaldun's definition of government the best in the history of political theory. More moderate views on the scope of Ibn Khaldun's contributions have emerged. Arthur Laffer, for whom the Laffer curve is named, acknowledged that Ibn Khaldun's ideas, as well as others, precede his own work on that curve. A focus on understanding the nuances of Ibn Khaldun's contributions