Supply-side economics "The Wall Street Journal", supply-side economist Arthur Laffer, and anti-tax leader Grover Norquist. By 2017, state revenues had fallen by hundreds of millions of dollars causing spending on roads, bridges, and education to be slashed, but instead of boosting economic growth, growth in Kansas remained consistently below average. A working paper by two economists at Oklahoma State University (Dan Rickman and Hongbo Wang) using historical data from several other states with economies structured similarly to Kansas found that the Kansas economy grew about 7.8% less and employment about 2.6% less than it would have had Brownback not cut taxes. In
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