The Great Stagnation: How America Ate All the Low-Hanging Fruit of Modern History, Got Sick, and Will (Eventually) Feel Better is a pamphlet by Tyler Cowen published in 2011. It argues that the American economy has reached a historical technological plateau and the factors that drove economic growth for most of America's history are no longer present. These figurative "low-hanging fruit" include the cultivation of much free, previously unused land, technological breakthroughs in transport, refrigeration, electricity, mass communications, sanitation, and the growth of education. Cowen, a professor of economics at George Mason University, theorizes that these factors have contributed to stagnation in the median American wage since 1973.