Raising KeynesBack to the future: a heterodox economist rewrites Keynes's General Theory of Employment, Interest, and Money to serve as the basis for a macroeconomics for the twenty first century. John Maynard Keynes's General Theory of Employment, Interest, and Money was the most influential economic idea of the twentieth century. But, argues Stephen Marglin, its radical implications were obscured by Keynes's lack of the mathematical tools necessary to argue