In most cases of macro forecasting, historical evidence (data) is and must be the starting point for arriving at a forecast. The fundamental problem with contemporary economics is that historical evidence is not only its starting point, but also its terminus. Why has economics become so data-driven? Underlying today’s historicist bias was a very important theory that permeated economics in the 1970-2000 period. This was the theory of Rational Expectations developed largely at the University of Chicago under the influence of Professors Sargent and Lucas. They wanted an absolutely rig...